Thursday, July 28, 2011

MERECEDES R CLASS




















DESIGINING

This face-lifted R-class is a more cohesive looking design that benefits from new headlamps, grille, bonnet and bumper – all reflecting the latest Mercedes-Benz lineage. But no matter how sophisticated the looks are, you still can’t get away from the fact that this does look like a shapely, low-slung van. This is true especially when you look at the rear three-quarters – the sheer length between the axles and the uninspired rear styling do nothing to hide the fact that this is essentially a people-mover.

It is based on the same platform as the Mercedes ML and GL 4x4s, which means the R-class is a monocoque and comes with 4MATIC, Merc-speak for a full-time, four-wheel-drive system. Suspension is by way of double wishbones up front and a multi-link setup at the rear and Merc’s AIRMATIC adaptive dampers. The car can be raised on its suspension to clear obstacles which is very useful when tackling speedbreakers. Enclosing all this is the massive body. At 5.1 metres, it is longer than the GL and quite a bit broader than an S-class. This substantial length and width adds a lot of weight and the
R-class weighs a pavement-crumbling 2230 kilos.

Surprisingly, the R-class doesn’t have the rigidity we expect from a Merc. Sure, the doors shut with a solid ‘thunk’ but over bad bits of road, the whole cabin shudders in a very un-German way.

INTERIOR

This face-lifted R-class is a more cohesive looking design that benefits from new headlamps, grille, bonnet and bumper – all reflecting the latest Mercedes-Benz lineage. But no matter how sophisticated the looks are, you still can’t get away from the fact that this does look like a shapely, low-slung van. This is true especially when you look at the rear three-quarters – the sheer length between the axles and the uninspired rear styling do nothing to hide the fact that this is essentially a people-mover.

It is based on the same platform as the Mercedes ML and GL 4x4s, which means the R-class is a monocoque and comes with 4MATIC, Merc-speak for a full-time, four-wheel-drive system. Suspension is by way of double wishbones up front and a multi-link setup at the rear and Merc’s AIRMATIC adaptive dampers. The car can be raised on its suspension to clear obstacles which is very useful when tackling speedbreakers. Enclosing all this is the massive body. At 5.1 metres, it is longer than the GL and quite a bit broader than an S-class. This substantial length and width adds a lot of weight and the
R-class weighs a pavement-crumbling 2230 kilos.

Surprisingly, the R-class doesn’t have the rigidity we expect from a Merc. Sure, the doors shut with a solid ‘thunk’ but over bad bits of road, the whole cabin shudders in a very un-German way.

DATA

Specification

ENGINE

Fuel

Petrol

Type

6 cyls in vee, 3498cc

Installation

Front, longitudinal

Bore/stroke

92.9/86mm

Compression ratio

10.7:1

Valve gear

4 valves per cyl,DOHC

Power

272bhp at 6000rpm

Torque

35.6kgm at 2400-5000rpm

Power to weight

121.9bhp per tonne

R-class

Length

5157mm

Height

1677mm

Wheel base

3215mm

Width

1922mm

TRANSMISSION

Type

All-wheel drive

Gearbox

7-speed auto

CHASSIS&BODY

Weight

2230kg

Tyres

255/55 R18

SUSPENSION

Front

Independent,double wishbone,air springs

Rear

Independent,multi-link,air-springs

STEERING

Type

Rack and pinion

Type of power assist

Hydraulic

BRAKES

Front

Ventilated discs

Rear

Ventilated discs

WHAT IS COSTS

Ex-showroom - Delhi

60.5lakh

Warranty

36months/unlimited km

RANGE AT A GLANCE

Petrol

3.5 Rs 60.5lakh

Performance

ACCELERATION

KPH

TIME (sec)

0-10

0.52

0-20

1.14

0-30

1.92

0-40

2.67

0-50

3.51

0-60

4.52

0-70

5.59

0-80

6.76

0-90

8.36

0-100

9.96

0-110

11.74

0-120

13.64

0-130

16.12

0-140

18.84

0-150

21.88

0-160

25.22

0-170

28.88

0-180

34.80

ACCELERATION IN GEAR

20-80 in 3rd gear

5.75s

40-100 in 4th gear

7.72s

BRAKING

80-0 kph

23.32m

ECONOMY

TEST

City

5.4kpl

Highway

8.7kpl

Tank size

80litres

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