1. Remarkable MPGs
Diesel vehicles typically get better mileage than their gasoline-burning siblings. It’s also usually easier to get that mileage them than it is with, say, a hybrid vehicle.
This is no exception. The diesel GLK more than proved its fuel frugality during a weeklong test spent mostly in city traffic. Heavy-footed driving is as common there as an NSA phone tap, but managing the advertised 28 mpg average wasn’t difficult.
The EPA’s official ratings suggest you should expect up to 24 mpg in the city and 33 on the highway, although it wouldn’t be surprising if careful drivers beat those numbers.