Mercedes-Benz's R-Class takes the qualities of a station wagon, a sedan, and an SUV, and combines them in an ingenious format. Though its look may not please everyone, we would be hard pressed to find a single fault with the interior design, as its comfort, and quality of materials and of assembly are hard to find fault with. Under the hood, you can opt for either a BlueTec diesel engine or a regular fuel engine. This is a vehicle that offers undeniable comfort on the road.