Mercedes-Benz first started putting diesel engines in US-market cars in the 1970s, and their technology has come a long way since then. The E-Class's BlueTEC system has been going strong since 2006, and the current model is no exception.
The E250 BlueTEC effectually replaces the E350 BlueTEC. Several changes from its predecessor include an upgraded front end and a more refined interior. The E250 has a 2.1-liter turbo-diesel engine coupled to a seven-speed automatic, a downgrade from the E350's 3-liter V6, but it puts out a strong 195 horsepower. The optional 4MATIC all-wheel drive provides extra driving power. Like earlier BlueTEC models, the E250 offers refinement, comfort, and Mercedes-Benz's signature entertainment and luxury features.