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Originally Posted by ausias
My car/s fuel consumption at 80 kmh now is 3.89L/100km (using cruise control) 1.9 TDI BXE 105 cv @ 138 cv.
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Try to have the rpm just above the number given for max torque.
For me, that's about 85kph indicated, and it works wonders in my car when on CC : 2.8L/100km indicated, which would be around 3.3 in real life.
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My goal with my car is 5.5 L/100km at 120 kmh cruise control (standard it was 6.76 L/100km). Current fuel consumption is: 122 km/h cruise control 6.06L/100km
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That seems very high for a 1.9 TDi ...
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I use P&G with my car while city driving becase of awful effficiency of 1st to 3th gears
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Try 4th
With a warm engine I've started to do 30kph / 20mph zones in 4th gear, in my car that's at idle rpm, and CC doesn't work down there !
As long as the road is flat or slightly downhill, it'll give good results.
But uphill - even climbing a speedbump - the FC goes way up !