Without wanting to get side tracked into a debate about going too slow on a motorway.
On a flat road at what constant speed would the iCDTI engine yield the highest fuel economy ?
My educated guess is that 50 mph (1500 rpm in 5th) would be the answer as any slower and the engine struggles in 5th.
(I get that pumping tyres, anticipating road conditions ahead, not carrying heavy objects in the boot, not using air con etc etc will help with fuel economy, but I'm just interested in speed)
On a flat road at what constant speed would the iCDTI engine yield the highest fuel economy ?
My educated guess is that 50 mph (1500 rpm in 5th) would be the answer as any slower and the engine struggles in 5th.
(I get that pumping tyres, anticipating road conditions ahead, not carrying heavy objects in the boot, not using air con etc etc will help with fuel economy, but I'm just interested in speed)