I would guess that 55 mph statistics apply to modernIsh cars. You know those introduced in the times where fuel economy sells rather than the gas guzzlers of years ago when people didn’t give consumption a thought and when petrol was cheap.
So all cars. Perhaps not as I doubt Lewis Hamilton’s Mercedes fits that bill. But the vast majority and probably all road cars being sold today. I would guess they all use this measure.
dOh Nut wrote: ↑Mon Jun 24, 2019 9:55 am
I would guess that 55 mph statistics apply to modernIsh cars. You know those introduced in the times where fuel economy sells rather than the gas guzzlers of years ago when people didn’t give consumption a thought and when petrol was cheap.
So all cars. Perhaps not as I doubt Lewis Hamilton’s Mercedes fits that bill. But the vast majority and probably all road cars being sold today. I would guess they all use this measure.
Where is your evidence? Cars come in so many different weights, shapes, engines, fuels etc. You really think they all have exactly the same most efficient speed? Dumb.
For example, my Porsche returns it's best figures when on a run at a lower speed than 70. The same applies to my Range Rover, my Golf GTI and my M3. All cars with different engine types and all benefit from a light right foot. If you hit the gas it disappears, and you can see from the on board computers that the return on mpg is best at or around 55mph. Trust me I tested it and it's interesting to see how little the speed increase is verses the drop off in mpg.
For example, my Porsche returns it's best figures when on a run at a lower speed than 70. The same applies to my Range Rover, my Golf GTI and my M3. All cars with different engine types and all benefit from a light right foot. If you hit the gas it disappears, and you can see from the on board computers that the return on mpg is best at or around 55mph. Trust me I tested it and it's interesting to see how little the speed increase is verses the drop off in mpg.