2 ms·
AIUI DPF regenerates naturally if the engine is loaded enough and automatic regeneration with extra fuel use is only necessary when that doesn't happen enough.
by blattimwind 7y ago
AIUI DPF regenerates naturally if the engine is loaded enough and automatic regeneration with extra fuel use is only necessary when that doesn't happen enough. 70 mph (~110 km/h) is only slightly faster than regular rural roads (though many are limited to 70 km/h), maybe average Autobahn trips at comfortable speeds (130-170 km/h [80-105 mph]) do make a difference here. I'm pretty sure I don't reach similar constantly high rpms (e.g. on my car 160 km/h in sixth is a bit above 2000 rpm) and loads on the engine in other driving situations.
- stillworks 7y agoYour description matches up with my experience. I think I am wasting fuel in cold weather. IIRC I haven't been in a situation where I drove over 2k rpm constantly. In the Economy mode, the ECU decides to shift into 5th gear at about 31mph and then I let the car coast. I would think 2k at 160kph is where this engine would be too if ever I drove at that speed. 99% of the times the max I have done is about 110kph where it is in 7th gear at under 2k rpm (having read about the engine and the owner's manual, that 7th gear is out of power band and is effectively overdrive, not possible to accelerate in 7th even gently)