 Like the Xsara, its glorious predecessor, the Citroën C4 WRC features four-wheel drive and a 2-litre turbocharged engine mated to a cross-mounted 6-speed gearbox.
At 4.20 m, the C4 WRC is longer than the Xsara and, in line with regulations, therefore has a larger width of 1,800 mm, compared with 1,700 mm for the Xsara. This change should provide better stability on bends. 
As also laid down in the new regulations, the use of electronic driving aids is limited, in the same way as for the Xsara in its 2006 configuration. Referring again to the regulatory budget cuts, the sub-systems of the C4 WRC – such as the engines, gearboxes, front, central and rear differentials and dampers – must last longer and be more reliable.
|
|
Technical characteristics |
| Engine | Turbocharged
Developed from the XU7JP4 engine
Layout: crosswise, tilted 25° towards the exhaust
Number of cylinders: 4 in line
Aluminium block
Capacity (cm3): 1,998
Max power (bhp – rpm): 315 at 5,500
Max torque (mkg – rpm): 58 at 2,750 | | Timing | 2 overhead camshafts driven by a toothed belt
4 valves per cylinder | | Power supply | Magneti-Marelli multipoint injection
Type: 2KR | | Transmission | 4WD
Carbon three disc clutch
Mechanical differentials on the front and rear axles – electronically controlled at the centre
Sequentially controlled 6-speed semi-automatic gearbox |
|
|
