R36 (wagon) fuel consumption

[Wolfman_36]

What is your oil temp reading after that 5 minutes? I'm not convinced that the engine is at 'normal operating temperature' while the engine oil is still <50C (no reading on the oil temp readout). In my R36, the coolant temp is up to the middle of the dial within about 5 minutes from a cold start too, but the oil temp usually takes at least 10-12km before it gets up over 80C (stabilizes around 90C +/- 5C).

You got me there - I have never though to check oil temp. I had assumed that if the water was up to temp the block was warm and the mixture would be at normal operating AFR. I would be fascinated to see AFR vs temps (oil, water) from a cold start to see when it stabilised. I do not have the facility to log, but I am sure someone could do it via the OBD port.........

[kimmik]

wow, i applaud the scientific approach and the meticulous care you have taken. thanks for sharing

[stephen8512]

slightly off topic here..

Would this figure be the same (more or less) for the sedan R36 as well? approx 400km per tank?

And it would be the same too for the V6 Passat CC Im assuming?

[kleung]

Would this figure be the same (more or less) for the sedan R36 as well? approx 400km per tank?

And it would be the same too for the V6 Passat CC Im assuming?

I'm not sure what to believe - the figures in the VW brochures don't really make a whole lot of sense logically:

(from the 2010 CC/Passat brochures)

Model	R36 sedan	R36 wagon	CC V6
Weight	1681kg	1747kg	1656kg
Combined economy	10.0l/100km	9.9l/100km	10.5l/100km
Urban cycle	13.0/100km	13.6/100km	15.5/100km
Extraurban cycle	8.2/100km	7.7/100km	7.7/100km
CO2 emissions	233g	231g	254g

So the heaviest car out of the three has the best overall fuel consumption, but the CC has taller gearing and weighs less than either R36 (and probably better aerodynamics) which should give it better overall fuel economy.

[PASHN8]

Just adding to this thread as a new R36 wagon owner

Getting around 500-550km's per tank as well and it ain't cheap to fill! I can't help but feel these things run insanely rich judging by the fuel consumption, colour of the exhaust tips and fuel smoke on WOT.
If only there was a ECU flash to pull fueling out of the low/mid rev range, it would be a better car I think.