Quote:
Originally Posted by Clan
the secret here is the cruising speed of 60 mph rather than 75 mph it makes a huge difference with wind resistancxe although the car feels so effortless at 75-80 mph it is burning a lot more fuel , people don't seem content with sitting at 60 mph on motorways ! average speed would have been over 50 mph too which is hard to maintain .
If he had the 1.6 D he would be up in the 80 mpg region ...
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I have read somewhere that the 2nd bigger turbo kicks in at approx. 2000rpm, but until then the smaller one gives the engine boost. Hence the fuel saving.
Why you need a large turbo running just to cruise at motorway speed seems daft, and 60/65 is just below the magic 2000 rpm figure. Agree cruising at 60mph is a lot more relaxing than 70/75mph AND you suffer less slowing down (and speeding up) due to slower traffic, AND you don't really save that much time.
Cheers
Bob