Stuttgart (Germany), Sep 1 (DPA) Mercedes-Benz has upgraded its R-Class SUVs with the introduction of the new R 280 CDI 4MATIC and R 63 AMG 4MATIC models.

The range has been expanded to five engine variants with an output from 140 kw/190 hp to 375 kw/510 hp.

Additional driver-support systems include a radar-based proximity control system and a rear-view camera for safe and easy parking.

Starting late this year, the diesel engine range available for the R-Class will be extended by a further six-cylinder engine, also equipped with third-generation common-rail direct injection.

Besides the R 320 CDI 4MATIC (165 kw/224 hp), Mercedes-Benz will also be offering the new R 280 CDI 4MATIC, which has an output of 140 kw/190 hp. As a result, the R-Class can achieve a top speed of 210 km/h and accelerate from zero to 100 km/h in 9.8 seconds due to its powerful torque of 440 Nm (from 1,400 to 2,800 rpm).

Combined fuel consumption is 9.3 litres per 100 km, so that the new R 280 CDI 4MATIC has a range of 850 km, according to the car maker.

Standard equipment in the R 280 CDI 4MATIC includes two oxidation-type catalytic converters and a maintenance-free particulate filter.

The six-cylinder unit is teamed up with the 7G-TRONIC seven-speed automatic transmission, which the driver operates electronically by means of the DIRECT SELECT lever on the steering column. The R 280 CDI 4MATIC is available exclusively with a 2,980 mm wheelbase.

At the upper end of the R-Class engine range will be the new R 63 AMG 4MATIC, a 6.3-litre eight-cylinder engine with an output of 375 kW/510 hp. Standard equipment for the R 63 AMG 4MATIC includes high-grade extras such as electronically adjustable AMG sports seats in front with multi-contour function, nappa leather and seat heating at the front plus light-alloy wheels with size 265/45 R 20 wide tyres, an AMG sports chassis and blue-tinted glass.

Optional features of the touring SUV are the actively ventilated luxury seats for the driver and front passenger. These seats are equipped with five fans which take in cool air from the floor level and distribute it evenly over the seat cushion and the backrest.