mjs4x4
A2OC Donor
I bought a 2002 TDI 75 a couple of months ago - and one thing I am not impressed with is fuel consumption. Mine struggles to average high 40's with a restrained driving style.
I recently used a 2004 Fabia TDI 75 (same AMF engine code) and found that on the same daily run the Fabia was 10+ mpg better than the A2.
I can't see any logic for this and wondered if the auxilliary heater in the A2 might be a contributory factor. What, in simple terms is the purpose of this? I also thought I read somewhere that from 2003 this heater was changed to a different type? Could this be a factor?
I should add that the A2 fuel consumption is with the Climate Control on Econ.
The only other difference is tyre size. My A2 is running on 17" wheels (soon to be changed to 16"). The Fabia runs 14" I think. I appreciate the wide wheels will add to the rolling resistance - but not to the tune of 10+ mpg.
One other point. I find that while both cars accelerate similarly, the accelerator pedal movement on the Audi seems to be about twice as far to achieve the same speed. Again, as both cars are 'drive by wire' I cannot think why this should be (and whether this might be a factor contributing to higher fuel consumption)?
Can any technical brains greater than mine (not difficult) suggest why the same engine in a steel bodied Fabia is so much more economical than an Aluminium A2?
Mike
I recently used a 2004 Fabia TDI 75 (same AMF engine code) and found that on the same daily run the Fabia was 10+ mpg better than the A2.
I can't see any logic for this and wondered if the auxilliary heater in the A2 might be a contributory factor. What, in simple terms is the purpose of this? I also thought I read somewhere that from 2003 this heater was changed to a different type? Could this be a factor?
I should add that the A2 fuel consumption is with the Climate Control on Econ.
The only other difference is tyre size. My A2 is running on 17" wheels (soon to be changed to 16"). The Fabia runs 14" I think. I appreciate the wide wheels will add to the rolling resistance - but not to the tune of 10+ mpg.
One other point. I find that while both cars accelerate similarly, the accelerator pedal movement on the Audi seems to be about twice as far to achieve the same speed. Again, as both cars are 'drive by wire' I cannot think why this should be (and whether this might be a factor contributing to higher fuel consumption)?
Can any technical brains greater than mine (not difficult) suggest why the same engine in a steel bodied Fabia is so much more economical than an Aluminium A2?
Mike