With its diesel engine, the 2008 Mercedes-Benz GL320 CDI transports seven people and plenty of cargo while getting mileage worthy of a midsize sedan. The oversize SUV from Mercedes-Benz features all the interior luxury we would expect from the German carmaker, along with performance that favors economy over power. Unfortunately, it uses the same baseline cabin gadgets we saw in its gasoline-engined counterpart, the Mercedes-Benz GL450. This system covers a lot of the basics well enough, but the interface is poor and some features are antiquated.
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