The Mercedes E-class estate will cost from £29,785 - with all levels carrying a £1750 premium over the equivalent saloon.
The E-class estate is being hailed for its class-leading load capacity. It has 695 litres of space with the rear seats up and 1950 litres with the seats down, which is 266 litres more than the new BMW 5-series GT. There is an additional 112 litres of load space under the car's floor.
The car comes with rear self-levelling air suspension as standard, because of its capacity for large, heavy loads, Mercedes says.
It goes on sale with a choice of seven engines: three diesels and four petrols. Fuel consumption and emissions are down by as much as 33.3 per cent compared with the outgoing equivalents.
A fourth diesel option will be added in June, the E350 Bluetec, which is being billed as the world’s cleanest diesel engine, as it already meets EU6 standards that come into effect in 2014.
It significantly reduces pollutants, and especially nitrogen oxides, by injecting a water-based urea solution into the exhaust flow.
The car is available in three trim levels: SE, Avantgarde and Sport. Standard safety kit includes a drowsiness detection system, a pedestrian protection system and adaptive high-beam assistance.