Which used Mercedes M Class 4x4 should I buy?
M-Classes are now widely available, but avoid Mercedes dealers to find the keenest prices, especially on older models.
If you can, go for a face-lifted model from a 51-plate onwards. Although the car didn't drive much better after these tweaks, the improvements to the materials and layout in the cabin went a long way to answering the criticisms of the original model. With any age of car, the 2.7-litre diesel is the best engine to choose, and preferably with the automatic gearbox. As we've said, the car's chassis is not the greatest, but its limitations are least obvious with the less powerful engines.
The diesel also has other advantages, such as its better fuel economy and strong low-rev pulling power, which is great for towing. There's a wide range of petrol engines, too, with the less powerful versions the best. Avoid the ML500 and ML55 AMG, which are too dear, and much too fast for their own good.
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