Fuel Economy Update for August - Best Tank Yet Still Falls Short of Highway Rating - 2015 BMW M235i Convertible Long-Term Road Test

2015 BMW M235i Convertible Long-Term Road Test

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2015 BMW M235i: Fuel Economy Update for August - Best Tank Yet Still Falls Short of Highway Rating

by Jason Kavanagh, Engineering Editor on September 14 2015

2015 BMW M235i

One of the fuel fill-ups scrawled into our long-term 2015 BMW M235i's log book sometime in August was the car's highest-recorded fuel economy to date: 28.6 mpg. Still, this is short of the car's EPA highway rating of 32 mpg.

The little droptop was driven extensively in August, covering a whopping 2,806 miles and averaging 22.0 mpg for the month. This represents a drop from the previous month's high-water mark of 22.5 mpg.

Its lifetime average fuel economy to date is 20.5 mpg, which is below the car's EPA city rating of 21 mpg, never mind its 25 mpg combined rating. To be sure, this engine is such a treat to drive that it's easy to delve deep into the reaches of the M235i's throttle pedal, the consequences of which are not extraordinary fuel economy.

Maybe Dan Edmunds should take this guy on his favorite stretch of highway to determine if it, too, can deliver on the promise made by its sticker.

Worst Fill MPG: 12.5
Best Fill MPG: 28.6
Average Lifetime MPG: 20.5
EPA MPG Rating: 25 combined (21 city/32 highway)
Best Range: 317.2
Current Odometer: 7,564

Jason Kavanagh, Engineering Editor @ 7,564 miles

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