- Grand California 680
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It also happened to me in France: typically the average consumption of my GC600 is around 8.7 l/km, but it couldn't go below 10 or even 12 l/km throughout the country...
Heavy traffic plus aircon working hard has its cost.Travelling on French, German and Austrian motorways these past few days and only managing 28mpg.
Heavy 680 with roof aircon drag.
Cruise control all the way.
Bad traffic in Germany.
Newish engine with 4k miles on the clock.
A below average driver behind the wheel
Heavy traffic plus aircon working hard has its cost.
Try a cruise at 60mph to get an indication of speed/drag cost for higher speeds.
Not a Grand but I've noticed long 50MPH limit sections on Motorways my consumption figure gives about 5mpg improvement over usual 70mph figure.
For real economy if in no rush try slipstreaming an HGV (90kph limit) or a Coach (100kph limit)
I've noticed a few cars try and do this behind me especially if I'm travelling at the speed limit. I tend to travel 5-10kph below the limit and that cures the problem pretty quick.For real economy if in no rush try slipstreaming an HGV (90kph limit) or a Coach (100kph limit)