Yep, 800 miles a week in the GT... 700 of which are motorway miles. Usually set the cruise control to 60-65mph, stick on and audio book, and float slowly to work...
Tend to spend time picking up draft/slipstream where I can too... Articulated trucks are too slow usually, but national express coaches are usually nice and nippy and leave a big wake behind them... Sit in behind them at a safe distance and the MPG rockets! Then the usual burn and coast when I'm on A-roads, reading road ahead to minimise use of brakes etc...
I don't drive 800 miles tank to tank, but the range meter on the dash is regularly north of 800.. I assume that includes the reserve volume as my fuel receipts and ODO readings put me at 52mpg average.
Indeed I was going to say. Its achievable "IF"
But giving someone a false average will only disappoint them.
Technically my car on just petrol has a theoretical range of 578.6 miles out of a 1.8 petrol.
But i'd have to drive all that at 60mph. Maybe even eek 600 miles if I did what you are doing but its not realistic.
Your figures are already higher than the average alfa GT owner by a good 25% because of the type of journey.
Hang on a minute........when you fill up, how much do you put in to brim it?......if you are getting 400 miles at 25 mpg that is 16 gallons, just under 73 litres. The 147 that it is based on only has a 60 litre tank......not sure how big the GT tank is, though....though Alfa Workshop says its 63 litres - just under 14 gallons.
So if you drain it to the last drop, and refill, then get 400 miles, you are getting around 29 mpg - still not stellar, but better. And you probably don't ever get it that empty....so, I'd say ignore the dash display and do a little basic maths......
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Cheers Rgwm, I think it's costing £78-80 to fill and 400 miles is the most I get so I should be getting a fair few more. I've done the maths before and the dash display isn't too far out in my case, which makes it a good reference point when trying to improve economy