After two fillups I have averaged 860 kiometres (500+ miles). City 75% of the time. Tire pressure at 34psi. I fill up without venting, but taper off the fill and make sure it is topped up to the maximum (again, without venting).
Your milage, even for city, seems a bit low. Check your tire pressure - and try and fill up with good diesel.
So far my average mpg for my 2003 GL TDI Jetta Wagon 5-speed is 51.8 MPG
for the last 1200 miles or so. I have not run the tank down yet but with 360 miles
on the tank registers just below the 3/4 mark. I use the vent trick when filling. I am
sure I should get a comfortable 600 miles on a tank.
I have a Golf, but in medium-traffic suburban driving, I get about 700mi before the low fuel light comes on (venting of course). I've only filled up a few times though. Besides a high speed road trip where I got about 50mpg highway, for the suburban driving (half-way between city/highway), I've had 44mpg twice and 47mpg yesterday.
edit: my daily trip is about 20 miles each way. I drive pretty slow until the temp comes up, then I drive like a madman.
[ October 20, 2002, 21:18: Message edited by: snoopis ]
I've never gotten more than 560 out of a tank, and that was vented-top to bone dry. Yea, the car ran out. *oops*
But no matter how I drive, 80% of which is hwy, I get 38mpg. That sucks. Timing is dead-center on the line, and I'm changing that VERY soon. Tires are now back to the 44psi manufacturer max, and maybe the mileage will go up. Damn Goodyear dealer tires, they stick to the road and slow me down!
My millage really sucks. Hold tight! I'm currently at 250Km (not miles) on half a tank. That's +/- 30Litres for 250Km. My fuel pump is broken, my wheels aren't aligned right. Got to take my car to the mechanic asap. My filter is probably dirty too (4000Km on it)... probably same thing for the oil (Delvac 1).
If I went my tank, my needle doesn't hit the TOP line until about 500 km (300 mi) Heck it deosn't even move until around 400 km. Usually get around 1600 km from a tank. 5l/100km or 56 impg or 47 usmpg. Most of my calcs have been around 55 impg on a 50/50 combined tank. My car has 155000 km on it.
On the Jetta, I have a 32 mile commute during the work week. About 6 miles of Interstate at 75 MPH, 5 miles of secondary road (speeds from 25 to 60 MPH), and about 22 miles of Suburban Driving (55 to 65 MPH; Some traffic lights). I have been averaging 47 mpg and over 700 miles on a vented tank.
So Rob, the Upsolute added some mpg to ya, huh? Did you change the timing or anything else? My timing is dead-center on the graph, so I am planning on bumping that to the upper edge of the safety zone later this week. Any other changes I should consider to up the mpg? Snow screen? EGR? (already adapted, might re-do the Epsilonian I removed)
Oil is Delvac, fuel is either B100 or randomly mixed with 40 cetane rotgut. I add Diesel Kleen booster to the B100 when I make it.
/edit: Realized I had typed "upsilon" when I meant "Epsilonian" in the post
Just filled up my 2002 Golf 5spd at 741 miles (light came on at 722) and put in 15 gallons on the button venting. All miles were hauling a mountain bike on the back and included a trip up to lake Tahoe (7000ft plus passes) and two level valley trips. ULSD in the tank. Average thus far with only 4000 miles has been right at 49mpg which I'm very happy with. Lots of 70+ driving too.
Based upon my log books, I cannot discern a mileage impact either way since installing the Upsolute chip. But, I do enjoy the torque and frequently mash the throttle and smile a little wider.
I have some other mods, but, I do not think they
affected my mileage greatly. Here is a list:
- VAGCOM ERG Adaption
- VAGCOM Injection Quantity Adaption
- CCV Elephant Hose Mod
- Tires (OEM Energy IV Plus) at 42 PSI
- Fuel Vent Guts Removed
- UK Mode Chimes and Clock
- TDICLUB FarfrumPumpen Static Stickers
[ October 23, 2002, 19:35: Message edited by: Rob_from_Elkmont ]
'03 jetta 1400 miles, last fill up was not vented, it took 15.6 gallons last night and that was 725 miles. mostly highway at 70mph+. In town the wife has a lead foot, she just loves the sound and torque of that thing!
I suppose my average mpg is a respectable 63mpg. I done an amazing 78mpg highway driving. I never went over 100km/60 mph. On the city driving I got 46mpg. I am not an aggressive driver and rarely go over 60mph and follow the speed limits wherever I am. I have a manual 2002 jetta diesal. I did get a 100$ rebate for buying a high mpg vehicle from the goverment.
My 98 Jetta averages 43-44 combined driving. Best was 51 mpg with 4 people and the air conditioner on. Mileage goes UP with the AC on, anyone know why?
Worst was 39-39 but I try to forget those. Usually around 550 I will fill up.
Does anyone remember the '70's movie, I think, where the neighbor was bragging about the mileage on his Beetle. So the annoyed neighbor who had to listen to this started putting in a few gallons at night. Mileage shot up and the guy was bragging more. After a few weeks, they started taking gas OUT so milesage went down. The guy was going nuts and spending a fortune trying to figure out what was wrong with the car.
My Average mpg for 7394 miles on my jetta 2002 5sp...
TLT MILES DRIVEN 7394
TLT GALLONS 159.3
TOTAL COST $217.20
FUEL COST PER MILE .03
I USE AMSOIL 5W30 AND NO OTHER PERFORMANCE PRODUCTS. I RUN MY TIRE PRESSURE NO LOWER THAN 35 AND TRY TO KEEP IT AT 38PSI
I AM GOING TO START TRACKING MY TOTAL COST EXCLUDING THE ORGINAL PURCHASE..
I AM TRYING TO AVG 50 MPG, BUT SO FAR CANNOT GET THEIR... AT THE LAST TDI FEST I WAS LUCKY TO HAVE THE PEOPLE AT VIACOM RUN A CHECK ON MY ENGINE AND RESET MY RECIRC AIR TO THE MOST AMOUNT OF FRESH AIR THEY COULD GIVE ME.
I WOULD LOVE TO KNOW IF ANYONE HAS ANY IDEA HOW TO GET TO THAT 50MPG GOAL..
[ October 31, 2002, 16:57: Message edited by: buck123 ]
Mileage on my Golf 5 speed hovers around 37-38 mpg very consistantly. This isn't too good by some standards, but I don't drive for economy and do a lot of stop and go freeway driving (16 miles in 57 minutes tonight on the 405 and Ventura Fwy.). In most any other car I'd be lucky to hit 25 or 30 mpg., so I'm happy with it.