Diesel power served 3 ways

Mercedes' V6 diesel engine is now available in several SUVs and one car in the U.S. market. No matter which hood you find it under, it'll surprise you.

Mercedes-Benz GL-320 CDI
Mercedes-Benz GL-320 CDI
You can get diesel versions of all three of Mercedes-Benz's U.S.-built SUVs: the R-class, the ML-class and the GL-class.

With three rows of seats and some off-road pretensions, the GL is the tallest and heaviest of the three.

The GL wraps you in the expected Mercedes luxury along with the expected annoying Mercedes quirks ("Hey, my back-up camera isn't working. Oh, of course... I forgot to turn on the radio!").

Third row seating isn't bad but it's nicer in other similar-sized SUVs such as the far-cheaper and more beautiful Buick Enclave and Mercedes' own R-class crossover, which is essentially a longer and lower GL.

Like the Grand Cherokee, the GL320 feels like it's towing a trailer full of boulders at low speeds. The six cylinders burble at low RPMs as the GL rumbles out from a stop.

Once again, though, punch the gas and the GL takes off in a surprising burst of speed.

Mercedes' sophisticated magnetically-adjustable suspension system, which can be switched from "sport" to "comfort" manually or automatically in response to driving style, keeps the big GL rolling gently over city bumps or reasonably stable at higher speeds.

EPA-estimated fuel economy is 20 miles per gallon overall, compared with 15 in a V-8-powered GL.


Diesels

Grand Cherokee

GL320

E320
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Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.