For acceleration from X to Y in a constant gear it would generally be true that the 535 has the edge, due to the torque. In real world driving, with kick down on the X to Y sprint, the 545 would edge it. One test (in gear) favors the characteristics of the diesel, the other (kick down to get the revs up) would favor the V8 gas engines.

 

For acceleration from X to Y in a constant gear it would generally be true that the 535 has the edge, due to the torque. In real world driving, with kick down on the X to Y sprint, the 545 would edge it. One test (in gear) favors the characteristics of the diesel, the other (kick down to get the revs up) would favor the V8 gas engines.
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I was thinking Kickdown... most optimized gear for each car to be in, in order to accelerate the fastest... not necessarily one gear.

So if the 545 is best in 2nd then use second and if the 535d is best in 3rd then use that... I'm ccurious to know under best cercumstances would the 535d be faster than the 545 in moving accleration.

 

I was thinking Kickdown... most optimized gear for each car to be in, in order to accelerate the fastest... not necessarily one gear.

So if the 545 is best in 2nd then use second and if the 535d is best in 3rd then use that... I'm ccurious to know under best cercumstances would the 535d be faster than the 545 in moving accleration.
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It's one gear. In general 50 to 70 times etc are typically measured with the car staying in the same gear. The 545 for example is a lot quicker 50 to 70 with kickdown than the official same gear spec time.

 

For acceleration from X to Y in a constant gear it would generally be true that the 535 has the edge, due to the torque. In real world driving, with kick down on the X to Y sprint, the 545 would edge it. One test (in gear) favors the characteristics of the diesel, the other (kick down to get the revs up) would favor the V8 gas engines.
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Agree...
The differences are very slight in both ways. But the main characteristic of the diesel that i ADORE it is the tuning characteristics. With only an ecu remap it can reach 350bhp. That's almost reaching for the 550i. 80bhp power increse and the torque of a monster. Other than that i like the petrol more for it's refinement and it's sound but i hate it for it's higher fuel consumption especially if u'r a city driver most of the time like me.
PS: i would adore a race in the city from X to Y due to the traffic conditions (of course not in rush hours, more like a sunday drive) with a 545i.