For a section of the M1 for 46miles, I got 35mpg out of the 5.4ltr V8 at an average of 52mph. when i filled up i took a mileage reading and compared that with the one before the trip. I Averaged 28mph over a 235mile trip, which would certainly have seen speeds above 80mph, but over the majority of the trip it averaged out at 59mph. The SLK, over the 9000miles I had, normally averaged between fill ups, of 23-25mpg, with the odd 28mpg for long smoothly temperate journeys, and one low point of 16mpg, which had several miles of being slung up and down a 2mile runway at speed reaching 164mph.
To campare that with a similar trip in the 6.1ltr, I got a staggeringly good 18.9mpg. Hmmmmm, must try harder so am gonna give Shell V power a got for a few tanks and see if i can get an improvement.:grin:
To campare that with a similar trip in the 6.1ltr, I got a staggeringly good 18.9mpg. Hmmmmm, must try harder so am gonna give Shell V power a got for a few tanks and see if i can get an improvement.:grin: