Audi, A6, C4, 2.5 TDI 140 (1994-)

The Audi A6 C4 was a series of executive cars produced by Audi from 1994 to 2004. The 2.5 TDI 140 variant was part of this lineup.

Engine:

• Type: inline-5 cylinder diesel engine
• Displacement: 2497cc
• Power output: 104hp (77kW) at 4000rpm, but a later update increased it to 140hp (103kW)
• Torque: 250Nm (184lb-ft) at 1800-3000rpm
• Fuel injection: Bosch VP37 rotary fuel pump with 5 injectors

Transmission:

• 6-speed manual transmission with double cone synchronizers and a helical gear layout for improved durability
• Gear ratios: 3.85, 2.19, 1.44, 1.00, 0.83, and 0.64

Dimensions:

• Length: 4.84m (15.5ft)
• Width: 1.74m (5.7ft)
• Height: 1.46m (4.8ft)
• Wheelbase: 2.67m (8.8ft)

Interior:

• Available in various trim levels, including base, SE, and Quattro
• Features a range of interior amenities such as air conditioning, central locking, and power steering

Performance:

• Top speed: electronically limited to 195km/h (121mph)
• Acceleration: 0-100km/h (0-62mph) in around 11 seconds
• Fuel economy: up to 26.4mpg combined (based on European test cycles)

Reliability and Maintenance:

• Generally considered reliable with a robust engine design
• Routine maintenance included regular oil changes, timing belt replacements every 60,000km (37,000mi), and a clutch replacement interval of around 80,000km (50,000mi)