Is there any reason why my fuel economoy has got worse over the winter months - same driving conditions, mostly motorway 60mph average. Back in the summer was getting 400miles to the tank - now struggling to get to 350. Recently serviced - filters oil etc...
Searching posts it seems I'm not alone - but whats the theory behind this - I thought cooler air would result in better performance (hence intercoolers) and therefore better mpg?
Could the preheater being on more often be a cause - thought that'd be ofset by getting the engine warmed up quicker.
Any thoughts?
Searching posts it seems I'm not alone - but whats the theory behind this - I thought cooler air would result in better performance (hence intercoolers) and therefore better mpg?
Could the preheater being on more often be a cause - thought that'd be ofset by getting the engine warmed up quicker.
Any thoughts?