£37,985 Audi A6 3.0 TDI quattro S-line
Engine: 24v 3.0-litre V6 turbodiesel, 2967cc
Maximum power: 237bhp @4400-4700rpm
Maximum torque: 500Nm @1500-3000rpm
Transmission: 6-speed manual, AWD
Weight: 1760kg
0-60: 6.6 seconds
Top speed: 155mph (electronically limited)

Average fuel economy: 42.2mpg
Carbon dioxide emissions: 179g/km

£42,605 BMW 535d M Sport
Engine: 24v 3.0-litre I6 twin-turbodiesel, 2993cc
Maximum power: 286bhp @4400rpm
Maximum torque: 580Nm @1750-2250rpm
Transmission: 6-speed manual, RWD
Weight: 1735kg
0-60: 6.4 seconds
Top speed: 155mph (electronically limited)

Average fuel economy: 42.2mpg
Carbon dioxide emissions: 178g/km

£43,455 Jaguar XF Diesel S Portfolio
Engine: 24-valve 3.0-litre V6 twin-turbodiesel, 2993cc
Maximum power: 275bhp @4000rpm
Maximum torque: 600Nm @2000rpm
Transmission: JaguarDrive 6-speed automatic with paddleshift, RWD
Weight: 1820kg
0-60: 5.9 seconds
Top speed: 155mph (electronically limited)

Average fuel economy: 42mpg
Carbon dioxide emissions: 179g/km

(couldn’t find any decent pictures of the E350 CDI – but it looks identical to this E500 Sport)

£35,970 Mercedes E350 CDI Sport
Engine: 24v 3.0-litre V6 turbodiesel, 1987cc
Maximum power: 231bhp @3800rpm
Maximum torque: 540Nm @1600-2400rpm
Transmission: 7G-Tronic 7-speed automatic,
Weight: 1825kg
0-60: 6.9
Top speed: 155 (electronically limited)

Average fuel economy: 40.9mpg
Carbon dioxide emissions: 186g/km

Layout: Front Engine, AWD
Transmission: 7 Speed PDK
Type: Porsche V8
Induction: Twin-turbocharged:
Displacement: 4.8 liters
Horsepower: 500 bhp
Curb Weight: 4350 lbs
Acceleration 0-60 mph s: 4.0 seconds
Top Speed: 188 mph
Base Price: $132,600

Layout: Front Engine, RWD
Transmission: 6 Speed Automatic
Displacement cu in (cc): 5.0 liters
Power bhp (kW) at RPM: 510 bhp
Torque lb-ft (Nm) at RPM: 461 lb-ft. (625 Nm)
Type: AJ-V8 Gen III Supercharged
Acceleration 0-60 mph s: 4.7 seconds
Top Speed: 155 mph (electronically limited)
Base Price: $70,000)