Display MPG's vs. At The Pump
- Thread starter x43x
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Souzafone
Veteran Member
Shouldn't this be in with Toyota threads, or are these Mark 6 Hondas? This should be in another forum.
frugality
Top Post Dawg
Think before posting.Souzafone said:
mo_focus
Veteran Member
we get 7.0L/100kms in the car and actual is 6.7L/100kms. Not sure what that is in MPG.
I want to know how accurate the VW calculators are in the MKVI vehicles. I merely used my current car for comparison since it is so inaccurate. I'm hoping VW's real time consumption display is more reliable than our Hondas.Souzafone said:
Robert M
Member
My 2010JSW seems to be pretty accurate. I have the in-car readout reset each trip, but my actual MPG seems to be close to what the in-car readout averages. I would be suprised if it is more than 1 MPG off.
frugality
Top Post Dawg
33.6mpg / 35.1mpgmo_focus said:
http://www.pege.org/fuel/convert.htm
That's only a 4% difference, which is minor.
The original poster is expecting a bit much of his fuel flow meter. It's a guide, not a precision instrument.
frugality
Top Post Dawg
Those of us with Suzuki motorcycles have to deal with a 10% difference in our speedometers. If you want to go an actual 60mph, you have to have 66mph on your speedo. The odometer works fairly accurately, but there is a designed-in error.
Remember that the mileage measurements will vary based on your tires. Different tire diameter = different readings, not only on the odometer, but on anything that uses the mile measurement, like your mileage. There are differences in diameters between different brands of tires. There is also a difference between the brand new tire (larger diameter) and a ready-to-be-replaced tire (smaller diameter.) They lose about an inch on the diameter over time.
That can account for a few % difference right there. So even the Germans can't be as 'precise' as you'd like them to be.
Remember that the mileage measurements will vary based on your tires. Different tire diameter = different readings, not only on the odometer, but on anything that uses the mile measurement, like your mileage. There are differences in diameters between different brands of tires. There is also a difference between the brand new tire (larger diameter) and a ready-to-be-replaced tire (smaller diameter.) They lose about an inch on the diameter over time.
That can account for a few % difference right there. So even the Germans can't be as 'precise' as you'd like them to be.
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jbright
Veteran Member
My MFD varies between spot on to about 1.5 mpg high or low. Never more than that. The MFD seems more accurate with city tanks than highway, for some reason. I reset my MFD#2 at reach fill up and use it as a general guide to what kind of mileage I'm getting per tank. I've been comparing my MFD to hand calculations since the beginning. I think the accuracy of the display is impressive, actually.
UberVW_TDI
Veteran Member
I've noticed my display has always been +0.6 to +0.8 mpg higher then actual. Not too bad.
It has nothing to do with only Suzuki bikes ...frugality said:
It's actually law that the speedometers must be optimistic. Can you imagine that a speedo would be showing less than real speed? The legal consequences are endless ....
My Golf is +8%. No big deal. My Honda bike used to bike +8% as well. My Suzuki bike is closer to +10% (DRZ).
On the other hand my Golf MPG is spot on ... Optimistic on the speedo part, spot on as fuel consumption. I like that set up ...
frugality
Top Post Dawg
I understand.....it's just that Suzuki bikes are just notorious for their excessively optimistic speedos.
In my Golf, going an actual 70mph requires that the speedo shows 73....about a 4% difference.
In my Golf, going an actual 70mph requires that the speedo shows 73....about a 4% difference.
PoliPino
Veteran Member
My fuelly calculated MPG seems to be about 1 MPG better than the MFD info, usually. Sometimes I do forget to reset the MFD for a couple miles after filling up though.
tomc585
Veteran Member
Its a guide and it's seems to pretty close as is the one in my 1996 jeep grand cherokee.
I've kept careful track of my mpg, I am averaging just under 42mpg with just over 4500 miles traveled total. I have noticed mpg going up as the engine breaks in and the weather warms up. My best thus far was 49.8mpg over the course of an hour driving on the freeway, I covered about 65 miles and wasn't trying to get good mileage. My best tank was 46mpg average over around 530 miles. I would say the MFD is pretty close to spot on, I haven't specifically tried to calculate it though.
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sportriderseattle
Veteran Member
- Joined
- Feb 28, 2010
- Location
- Seattle, WA
- TDI
- '10 Golf 2dr, 6-speed manual, sunroof, CWP, Votex kit, roof spoiler, 35 tint
well, I don't know if you could actually compare the "at pump" calculation to the display. The display only averages the MPG for that particular trip and not the actual tank full. So with that I have noticed my display on several 50-150 mile trips averaging 44-47 mpg, but "at the pump" method I averaged 44 mpg on the tank full. I made it 592 miles on that tank before refueling.
40X40
Experienced
sportriderseattle said:
Really? I thought there was one for trip and one for tank. Please check your manual.
Bill
Plus 3 Golfer
Veteran Member
Not the first nor will it be the last person that hasn't read the manual.40X40 said:
sportriderseattle, there are two memory displays on the MFD. The first automatically resets after the ignition has been shut off a few hours. The second automatically resets after XXXX miles, time, or gallons (IIRC, 9999 miles, 999 gallons, 99 hours 59 minutes). Both can be manually reset.
sportriderseattle
Veteran Member
- Joined
- Feb 28, 2010
- Location
- Seattle, WA
- TDI
- '10 Golf 2dr, 6-speed manual, sunroof, CWP, Votex kit, roof spoiler, 35 tint
the owner's manual? that thing is the biggest piece of poo. They might as well have wrote it in German.40X40 said:
I must admit if there were any one thing that I dislike about my car it's that freakin' manual.
nj1266
Veteran Member
I actually find the manual very helpfull especially the control and equipment section.sportriderseattle said:
UberVW_TDI
Veteran Member
sportriderseattle said:
Well let us help you out a bit,
The MFD has three mpg displays.
1. Present mpg
2. Trip mpg (notated with a small #1 in the display). This will reset automatically after two hours of not driving.
3. Tank mpg (notated with a small #2 in the display). This is usually reset manually... ie after fueling up.
PS: read your manual, you'll learn some things.
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l3it3r
Veteran Member
I've calculated to be about 1mpg LESS on the MFD vs Actual.
That being said... here's a photo from my last 300mile round trip:
That being said... here's a photo from my last 300mile round trip:
glennmax
Member
UberVW_TDI said:
Sage advice.
ElectricMayhem
Veteran Member
My trip MPG always reads in the low 5s (l/100 km) when I shut off the car but when I fill the tank and divide by the trip odo I find that I am really averaging in the low 6s. My speedo is about 10% high, not sure if that has anything to do with it.
maxedtdi
Veteran Member
1-2mpgs off...
BarnyardsTDI
Veteran Member
- Joined
- Oct 28, 2010
- Location
- Sacramento California
- TDI
- 2010 Golf w/DSG, Malone Stage 2 (all emissions intact), HID's, Sunroof, Dynaudio, NAV
Mines been over actual MPG by about 1.
jetlagmech
Veteran Member
I usually find mine very close. recent 1100 mile one way trip Vegas to Washington state nonstop my mfd trip mpg showed 50.4 mpg, calculated at pump 49.8
on trip back again non stop mfd showed 51.3... calc at pump was 50.8 mpg.
non stop just means no sleepovers during trip. Did fill up halfway and a few leg streatcher breaks. preplanned for fuel stop where convenient and cheaper and having range left just in case.
on trip back again non stop mfd showed 51.3... calc at pump was 50.8 mpg.
non stop just means no sleepovers during trip. Did fill up halfway and a few leg streatcher breaks. preplanned for fuel stop where convenient and cheaper and having range left just in case.