E92 335i auto 2006 - 34k miles
Best - 38mpg (on the motorway)
Average - 25.4mpg
I'm astounded by how good the 335i is on the motorway. Once you settle down at 70mph, it really is very frugal for a car with 320bhp and a 3litre straight 6 twin turbo under the bonnet!
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