TDI reliability issues??? whats up??

glos

New member
Joined
Jun 24, 2003
Hi everyone. I'm looking into buying a 2003 jetta TDI wagon soon but have been bummed on the consumer reports info I've read about how unreliable the jetta is. I can't find any info anywhere about "what" is actually unreliable and was hoping some of you could help out with that...cosmetic, electrical, mechanical,?????
my friend has a tdi sedan and loves it, and hasn't had any major issues, so what's the deal with consumer reports???

any info you all have would really help out!!

thanks
 

SwimmerDave

Veteran Member
Joined
Sep 1, 2002
Location
Decatur, GA
TDI
2014 JSW 6MT
The vast majority of Jettas sold are either 2.0s, 1.8Ts, or VR6s. The most common failure among all of those are the coil packs, which pretty much make the car non-operational. Hence, it's a service-affecting failure. The second most common failure, I believe, are the window regulators. If you dig deeper into the CR rating for the Jetta, you'll find that these 2 issues are the reason why.

Since TDIs do not have spark plugs, they do not need coil packs. However, we do have window regulator issues. Fortunately, VWoA got enough flak over the window regulators that they issued a recall. They also started installing non-POS (higher quality) window regs in the new A4s (the Jetta, Golf, and NB all share the A4 chassis). 2003 and beyond, I believe.

About the only "reliability" issue that you will probably have with your TDI is the Mass Air-Flow (MAF) sensor. The MAF issue has been discussed thoroughly on these forums. I'll summarize those discussions by saying that you probably want to stick with the OEM paper filters and make ABSOLUTELY sure that you get a snug, secure seal when you pop the new one in. VW also MAY have figured out the MAF issue and MAY be installing more durable ones in the new TDIs. However, I would not hold my breath. Expect on replacing the MAF a few times during the lifetime of the car. I think they run between $200 and $300.
 

Lightman

Veteran Member
Joined
Mar 10, 2002
Location
Sunny Florida
MAF's are a common failure item for tdi's, as are the window regulators. Also common are many rattles and creaks, and clogging intakes. While there are steps to take to combat/eliminate intake clogging, it's still an inherent problem with tdi's in north america. While the jury on the widespread long term durability of these cars is still out, they seem to be pretty solid, the economy is great, and I wouldn't let those few factors scare you away from the purchase, just beware. Little things may go wrong, this isn't a toyota....but luckily it doesn't drive like one either
 

dieseldorf

Top Post Dawg
Joined
Oct 11, 2000
Location
MA
TDI
ex- 1996 wagon, ex-2000 Jetta
I wouldn't let those few factors scare you away from the purchase, just beware.




this isn't a toyota....but luckily it doesn't drive like one either


glos, they're great cars...flaws and all. It's just that the TDI may be less "well-suited" to some individuals than others.


We are looking at acquiring our 3rd TDI when the V10 makes an appearance in the Touareg in 6 months..that will be really exciting.

glos, how many miles/year will you do on this proposed TDI wagon?
 

jjvincent

Veteran Member
Joined
Jun 3, 2002
Location
Bethlehem, PA
TDI
Jetta, 2K, Green
One other thing to take into account, all cars have problems. No matter what kind of car, you'll be able to find a group of people out there that will tell you of all of the problems that they have. That's why the phrase, "Misery loves company" was coined. The TDI is pretty much average when it comes to reliability. It’s not perfect but neither is any other car out there. There are no “show stoppers” that I can think of. The engines don’t wear out prematurely, blow up unrepentantly, break down at an unusually high rate and don’t require unusual or expensive maintenance procedures. Also, you have a valuable resource here on this site as to keeping a TDI running reliably and inexpensively.

My suggestion is to go out and drive one for a while and then go do the same for other vehicles you are looking at. Ask yourself these questions (powerplant specific):

- Does the TDI deliver adequate performance?
- Can I live with a vehicle that delivers high fuel efficiency?
- Do I mind using the diesel pump at the fuel station?
- Do I have the ability to drive my car 600+ miles at a time and not stop for a break?
- Do I have the long-term memory that allows me to remember how to fill the fuel tank up?
- Am I ready to boast to others about the fuel efficiency I am getting?

These are good questions to ask yourself. If you answered yes to all of them, then you are ready to purchase a TDI.
 

BawlsyTDI

Veteran Member
Joined
Mar 21, 2001
TDI
jetta, someday a getta, 2001, baltic green
Hey Dorf, when you get the t-reg, can I have your wagon?
 

CWO4

Well-known member
Joined
Nov 7, 1999
Location
Woodbridge, VA
TDI
2002 Jetta TDI Green
May I give you my honest appraisal? We've had our 2002 Jetta TDI Automatic for 13 months. I love the car, and we've never had an engine problem. However, we have had a window fall down one morning on a long extended business trip, an AC compressor fail and be replaced, an ambient temperature sensor replaced, a door handle replaced, a windshield replaced, the wipers replaced, the seat mechanism replaced, one flat tire repaired and a few $75 oil changes. Now it has been in the shop six, yes six days, because the clock quit. Apparently you can't replace the clock, you have to replace the whole console. They did and now the immobilizer won't reprogram the keys. Luckily, all of the replacements, with the exception of the windshield, have been under warranty and each time I have been given a loaner car, which ranged in quality from an Escort to a Jetta V6, to the current Mercury Sable. Is my car a lemon? Maybe, by someone's standards, but I love to drive this car, when I can. Again, I've never had an engine or transmission problem. I'm not ready to give up yet, but they do seem to try your patience.
 

highhilltdi

Veteran Member
Joined
Oct 29, 2002
Location
O-HI-O
TDI
'00 Jetta GLS
May I give you my honest appraisal? We've had our 2002 Jetta TDI Automatic for 13 months. I love the car, and we've never had an engine problem. However, we have had a window fall down one morning on a long extended business trip, an AC compressor fail and be replaced, an ambient temperature sensor replaced, a door handle replaced, a windshield replaced, the wipers replaced, the seat mechanism replaced, one flat tire repaired and a few $75 oil changes. Now it has been in the shop six, yes six days, because the clock quit. Apparently you can't replace the clock, you have to replace the whole console. They did and now the immobilizer won't reprogram the keys. Luckily, all of the replacements, with the exception of the windshield, have been under warranty and each time I have been given a loaner car, which ranged in quality from an Escort to a Jetta V6, to the current Mercury Sable. Is my car a lemon? Maybe, by someone's standards, but I love to drive this car, when I can. Again, I've never had an engine or transmission problem. I'm not ready to give up yet, but they do seem to try your patience.
What really sucks is when you buy a Toyota to avoid all the above mentioned hassle and it still happens. My sister-in-law has had more parts replaced on her '02 Celica than I can keep track of. All four pads, rotors, and one caliper. Sunroof replaced. Car will not stay aligned and tires are pretty much worn out. ABS computer quit working. Interior lights blow fuses regularly. Suspension squeaks like crazy and brakes grind/squeal even with new parts. This with a whopping 13k miles on the odo. She's talked about buying my Jetta if I can get a Passat TDI.

That's not an isolated incident either, my last (and likely my very last) Camry was much worse than my TDI has been.

As for those $75 oil changes, only you can be blamed for ponying up that kind of dough to an oil jockey.
 

Lightman

Veteran Member
Joined
Mar 10, 2002
Location
Sunny Florida
CWO4, I suggest you read the mammoth thread on the Euro MFA cluster. There is so much info on the immobilizers, reprogramming instrument clusters etc, I'm sure you'd find your answer, or your dealer would. Just a thought.
 

chemmie

Member
Joined
Apr 3, 2003
Location
Atlanta, GA
TDI
ummm... 2002 Dodge Ram 1500
May I give you my honest appraisal? We've had our 2002 Jetta TDI Automatic for 13 months. I love the car, and we've never had an engine problem. However, we have had a window fall down one morning on a long extended business trip, an AC compressor fail and be replaced, an ambient temperature sensor replaced, a door handle replaced, a windshield replaced, the wipers replaced, the seat mechanism replaced, one flat tire repaired and a few $75 oil changes. Now it has been in the shop six, yes six days, because the clock quit. Apparently you can't replace the clock, you have to replace the whole console. They did and now the immobilizer won't reprogram the keys. Luckily, all of the replacements, with the exception of the windshield, have been under warranty and each time I have been given a loaner car, which ranged in quality from an Escort to a Jetta V6, to the current Mercury Sable. Is my car a lemon? Maybe, by someone's standards, but I love to drive this car, when I can. Again, I've never had an engine or transmission problem. I'm not ready to give up yet, but they do seem to try your patience.
With that many problems, you really should look into your state's Lemon Laws and see if you qualify. You might be able to get a new car or money back. You should look into it. It does no harm.
 

dman268

Member
Joined
Jun 21, 2003
Location
Washington
TDI
Jetta, 2000, dark blue
Give this post a read, it is called loss of faith, all I can say is know what you are getting into. Good luck.
 

GoFaster

Moderator at Large
Joined
Jun 16, 1999
Location
Brampton, Ontario, Canada
TDI
2006 Jetta TDI
At 318,000 km, my VW has experienced what I would consider an acceptable number of "things gone wrong" considering the age of the vehicle.

Other vehicles that I've owned - and that includes two Toyotas - were traded in at lower odometer readings due to impending expensive repairs and RUST.
 

jettajim

Veteran Member
Joined
May 31, 2000
Location
near Houston
TDI
'14 Golf 6-spd, '12 Passat gasser:(
The main problem with CR is ITS CONTENT
!!!

TDIs are great cars and just as with any other mechanical device, a little TLC is all that's required
!
 

master cylinder

RIP, Gone But Not Forgotten
Joined
May 1, 2002
Location
Brighton, Michigan
TDI
Jetta GLS, 2002, Cool White
2002 Jetta GLS TDI - 28K miles - no issues except for windshield replacement and two chip repairs due to gravel trucks! Last week I had 677 miles on the tank and decided to fill up - I couldn't squeeze $20 into it! Need I say more?
 

AndyBees

Top Post Dawg
Joined
May 27, 2003
Location
Southeast Kentucky
TDI
Silver 2003 Jetta TDI, Silver 2000 Jetta TDI (sold), '84 Vanagon with '02 ALH engine
Apparently the ambient air temp sensor is a weak link in the air condidtioning system. Mine was dead when I purchased it in March of 2002(used 2000 TDI Jetta). The air will work, but the compressor never cycles (constant cooling). Also, my brother has had the same problem with his 2001 Jetta TDI. My question is how well will the cylinder walls last in the TDI. The old style VW diesel engines (both 1.5 and 1.6) were notorious to wear out causing exceptional blow-by. I have driven over a million miles in the old style (Rabbits and Jettas). The new models are far better than the earlier models. But, as several responders have stated, there is not a perfect car out there. However, I do think VW is on to something with the TDI.


AndyBees

(P.S. My '83 air cooled Vanagon has been to Alaska and back six times and down to Key West, Florida once, as well as numerous other trips to rack up 195,750 miles on the odometer. It would have been great to have got 50 mpg instead of 19 to 20 mpg on those trips. I live in Kentucky.)
 

tjl

Top Post Dawg
Joined
Mar 19, 2001
Location
California, USA
TDI
2001 Golf GLS
Hi everyone. I'm looking into buying a 2003 jetta TDI wagon soon but have been bummed on the consumer reports info I've read about how unreliable the jetta is.
Pre-2003 a4 VWs had weak window regulator clips which failed often. The 2003 should have better clips that don't fail. VW has extended the warranty on pre-2003 a4 cars to 7 years for the window regulator clips, and is using the new type for replacements (although it is still annoying to have one fail since it leave the window stuck in the down position).

The glove box door hinge may break.

Some of the gasoline engines (particularly the 1.8L turbo) got a batch of failure prone coil packs in 2000-2002. These are obviously not a problem with the TDI.

Early TDIs had relay 109 that failed often. New ones have a better relay 109. If you buy a used early TDI with the black relay 109, replacing it with the newer gray relay 109 should avoid the problem.

Mass airflow sensors may fail on all engines. This is probably the only significant engine problem that affects the TDI.

Some 2002 cars with Monsoon stereo systems had incorrect wiring that made the stereos sound bad.

My 2001 car needed warranty service to replace the driver's door latch, which failed to detect door open situations intermittently (door open detection to sound the headlight chime, etc.). The dealer replaced the (not failed) window regulators while the door was opened up for that. It has not had the glove box door or mass airflow sensor problems listed above, and came with the newer gray relay 109.
 

n1das

TDIClub Enthusiast, Veteran Member
Joined
Jun 11, 2002
Location
Nashua, NH, USA
TDI
2014 BMW 535xd ///M-Sport, 2012 BMW X5 Xdrive35d, former 3x TDI owner
I have a 2002 Golf TDI 5-speed, with 61k miles on it (read: I do a lot of driving!). I've had absolutely ZERO TDI engine-related problems. The car has been very solid and should hold up very well. The only non-scheduled maintenance item I've had is that I've had to replace my low beam headlight bulbs about every 10k miles.

The '02 Golf uses H7 halogen bulbs that produce a very bright white light. However, they trade away some bulb life to get the performance. It appears to be a bulb issue. It's not an issue with VW other than VW could have designed in a longer life bulb instead of the H7. Other European cars also use the H7 bulb. It's not uncommon to see Volvos and Saabs driving around with a bulb out. I don't know if the 2003's use a different bulb or not. I replace my bulbs myself because it's simple enough to do and I won't let a dealer touch it.

In general from what heard and read about VWs is that they are solid cars and are capable of holding up well over the long term. If a VW has problems, they are generally related to issues with build quality. They are generally not design issues and after problems are corrected (properly) they generally don't return. It looks like they still have an issue with MAF sensors. It appears the VW's problems are more related to VW as a company and incompetent dealer service.

The intake clogging problems are preventable with a few easy mods and by driving the TDI properly. TDIs are designed to be driven hard. People that "baby" them, thinking that it will prevent problems are the ones who tend to have more problems with clogged intakes. Regularly driving them *hard* helps keep them cleaned out. In order to handle being driven hard all the time, they have to be built very solid. You can safely "get on it" and not worry about breaking anything over the long term.

My TDI is the most efficient Autobahn burner I've ever owned and I drive it like one!

Hi everyone. I'm looking into buying a 2003 jetta TDI wagon soon but have been bummed on the consumer reports info I've read about how unreliable the jetta is.
I totally disgree with CR's assessment of VWs, given my excellent TDI experience so far. I had a 2000 Golf 2.0 gasser for a while and had absolutely ZERO problems with it too, except for a few annoying squeaks and body rattles. The body in my 2002 Golf TDI is far more solid.
Pre-2003 a4 VWs had weak window regulator clips which failed often. The 2003 should have better clips that don't fail. VW has extended the warranty on pre-2003 a4 cars to 7 years for the window regulator clips, and is using the new type for replacements (although it is still annoying to have one fail since it leave the window stuck in the down position).
I haven't had this problem (yet). Every time I raise or lower a window, I'm always listening for the telltale KLUNK sound of a failed regulator or one that's about to fail.
The glove box door hinge may break.
I'm not worried about this at all. I'll take care of it myself if it happens. No dealer is going to touch it.
Some of the gasoline engines (particularly the 1.8L turbo) got a batch of failure prone coil packs in 2000-2002. These are obviously not a problem with the TDI.
I think I'll hold onto my TDI! A Diesel engine has about 1/3 fewer parts that a modern gasoline engine. One of the things I love about Diesels is its simplicity and that non-existent parts can't fail. A Diesel is far simpler and cheaper to maintain than a gasser. Diesels also have a lot in their favor for longevity because of how they operate and how tough they have to be built. There are TDIclub forum members with well over 100k miles on their TDI's and their performance and mileage are STILL increasing! (How many gassers can do that?)
Early TDIs had relay 109 that failed often. New ones have a better relay 109. If you buy a used early TDI with the black relay 109, replacing it with the newer gray relay 109 should avoid the problem.
The Relay 109 part costs around $20 at the dealer and it's easy to change it yourself if you ever have to change it.
Mass airflow sensors may fail on all engines. This is probably the only significant engine problem that affects the TDI.
I agree. I haven't had mine fail yet, but I'm on the lookout for the telltale signs.
Some 2002 cars with Monsoon stereo systems had incorrect wiring that made the stereos sound bad.
I had this problem in my '02 Golf. I noticed it didn't sound as good as the Monsoon system in my 2000 Golf 2.0 gasser. The fix involves swapping 2 wires in the wire harness between the head unit (HU) and the Amp. It's easy to do and I fixed it myself. It's a killer audio system now! The engineer responsible for writing the wire harness documentation may have been dyslexic. Who knows. Mistakes happen. It may also have been something carried forward from a previous design.

I agree that a VW isn't a Toyota but luckily it doesn't drive like one either!

Would I buy another VW? Yes, definitely!


~ n1das
 

DieselLover

Veteran Member
Joined
Jun 16, 2000
Location
Long Island, NY USA
TDI
Jetta GLS 2002 Black
I have a 2002 Jetta TDI, 13 months old, with 16,800 miles. Here are my only problems with it.

1. Squeak in rear suspension. Caused by misaligned shock on right side. Repaired under warrenty.

2. Radio died. Replaced under warrenty.

3. Window regulator failed on right front window. Both it and the one for the left door window are being replaced under warrenty. Also got free rental car in meantime.

I am very pleased with both my Jetta and my dealer (Bayside Saab-Volkswagen).

Stuart
 

CWO4

Well-known member
Joined
Nov 7, 1999
Location
Woodbridge, VA
TDI
2002 Jetta TDI Green
Well, here's the latest. After getting the immobilizer codes straightened out and the clock fixed, I figured nothing elso could break. Made the holiday weekend, tried to use the cruise, the cruise control now doesn't work. It's got to have something to do with the work thay just did. I've never had a problem with the cruise. My wifes $10,000 Cavalier...She's never had a problem, punctuation period. VW does try your patience.
 

FlyTDI Guy

Top Post Dawg
Joined
Nov 3, 2001
Location
PNW
TDI
'01 Jetta GLS
It just seems that there are 'good' ones and 'bad' ones when it comes to our TDI's... Driving habits play into it I'm sure (4 kids, wife, bikes and a dog -vs- single driver -vs- teenage driver, etc.) but just short of a couple years and 40,000 miles, I have had ZERO issues of any kind. I recently replaced my low beams because one finally burned out. I was strangely excited to finally have a reason to dig into my car, go figure. That's it, no other issues. Every brand of car has it's warts. Most have already been covered here. I'm sure there are nightmare stories for every type of car.

In our case, I think the biggest problem is the dealers and the quality of service they provide. There were only 30 some thousand TDI's sold last year and good technicians are few and far between. I think (quote from memory) that only represented 2% of all the VW's sold. The training the techs get apparently reflects that percentage. That's where Fred's comes in.

The advice here is the absolute best source for diagnosing and solving problems. If you are a DIY kind of guy, you will be fine. Even if not, steering your dealer based on the info gleaned here should save you $$ and keep the dealer from just throwing parts at the problem 'till they accidentally find it... This is a universal problem, not specific to VW dealers.
 

eisenkrote

Veteran Member
Joined
Oct 1, 2002
Location
Austin/SA, TX
I have an '03 wagon, 11 months and 37,000 miles with (almost) no problems. I do all the maintenance myself, mostly because I enjoy it. The calipers squeak, and need lube (there is another thread around here on this topic), and the driver's window clunks when lowered. Will take this to the dealer for repair. The only problem I can anticipate at this point is a speeding ticket... This car really loves to run.

This car has been a joy to own and drive, and is from another planet compared to my previous Volkswagen, which shared its age, aerodynamics, and acceleration with the Berlin Wall. To paraphrase, the only way you'll get me to give up my Jetta is to pry the steering wheel from my cold, dead fingers (or swap for a BMW diesel...).
 

CWO4

Well-known member
Joined
Nov 7, 1999
Location
Woodbridge, VA
TDI
2002 Jetta TDI Green
It wasn't so bad. Called my service rep today and told him the Cruise wasn't working. He told me the code probably wasn't set when the immobilizer codes were set. Took it in after work today. Ten minutes later everything was fixed. Tried it out on the Interstate awhile ago, it worked fine. Now, today, July 7, 2003, nothing is wrong with my car! Hooray!
 

ruking

Top Post Dawg
Joined
Mar 27, 2003
Location
San Jose area, CA
TDI
2003 VW Jetta, 5 M, Reflex Silver: 09 Jetta, 6 Sp DSG, Candy White: 12 VW Touareg, 8 Sp A/T, Flint Gray
The vast majority of Jettas sold are either 2.0s, 1.8Ts, or VR6s. The most common failure among all of those are the coil packs, which pretty much make the car non-operational. Hence, it's a service-affecting failure. The second most common failure, I believe, are the window regulators. If you dig deeper into the CR rating for the Jetta, you'll find that these 2 issues are the reason why.

Since TDIs do not have spark plugs, they do not need coil packs. However, we do have window regulator issues. Fortunately, VWoA got enough flak over the window regulators that they issued a recall. They also started installing non-POS (higher quality) window regs in the new A4s (the Jetta, Golf, and NB all share the A4 chassis). 2003 and beyond, I believe.

About the only "reliability" issue that you will probably have with your TDI is the Mass Air-Flow (MAF) sensor. The MAF issue has been discussed thoroughly on these forums. I'll summarize those discussions by saying that you probably want to stick with the OEM paper filters and make ABSOLUTELY sure that you get a snug, secure seal when you pop the new one in. VW also MAY have figured out the MAF issue and MAY be installing more durable ones in the new TDIs. However, I would not hold my breath. Expect on replacing the MAF a few times during the lifetime of the car. I think they run between $200 and $300.
I also saw this in a TSB or something and very simply:

DO NOT treat with SILICONE ANYTHING under the hood area or NEAR where excess product can get sucked into or through the MAF!!! Silicone in ANY form is curtains for the MAF!

I also hope to keep this TDI for its 10,000 hr engine life and beyond if I can. At 50-55 mph average speed the mileage is 500-550k
 
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