First Drive: Mercedes-Benz GLS 350 d
The Mercedes GLS is a leviathan of the road – it's longer than even the Audi Q7 – and is a facelifted and revised version of the car maker's GL.
Offering seven seats, the GLS is designed for larger families who want to travel in style and comfort. Using a cleaner version of the 3.0-litre diesel V6 that featured in the GL, the GLS should be able to keep up with rivals in terms of performance and economy. Has it? AOL Cars finds out.