The Citroën C5 I (Phase II), specifically the 1.8i 16V variant produced between 2005 and 2008, represented a key offering in Citroën’s mid-size sedan lineup. This iteration of the C5, built on the 1HX0 platform, aimed to provide a comfortable and practical vehicle for families and commuters. The Phase II update brought styling refinements and improvements to the interior, solidifying the C5’s position as a competitor to vehicles like the Ford Mondeo and Volkswagen Passat in the European market. This 1.8L engine paired with a five-speed manual transmission was positioned as a mainstream option, balancing affordability with reasonable performance and fuel economy.
Technical Specifications
| Brand | Citroën |
| Model | C5 |
| Generation | C5 I (Phase II, 2004) |
| Type (Engine) | 1.8i 16V (125 Hp) |
| Start of production | 2005 |
| End of production | 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 10.4 l/100 km (22.6 US mpg, 27.2 UK mpg, 9.6 km/l) |
| Fuel consumption (extra urban) | 5.9 l/100 km (39.9 US mpg, 47.9 UK mpg, 16.9 km/l) |
| Fuel consumption (combined) | 7.6 l/100 km (30.9 US mpg, 37.2 UK mpg, 13.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.4 sec |
| Acceleration 0 – 62 mph | 10.4 sec |
| Acceleration 0 – 60 mph | 9.9 sec |
| Maximum speed | 201 km/h (124.9 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 11 kg/Hp, 90.8 Hp/tonne |
| Weight-to-torque ratio | 8.1 kg/Nm, 123.5 Nm/tonne |
| Power | 125 Hp @ 6000 rpm |
| Power per litre | 71.5 Hp/l |
| Torque | 170 Nm @ 3750 rpm (125.39 lb.-ft. @ 3750 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 6FY EW7A |
| Engine displacement | 1749 cm3 (106.73 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82.7 mm (3.26 in.) |
| Piston Stroke | 81.4 mm (3.2 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 8.8 l (9.3 US qt | 7.74 UK qt) |
| Kerb Weight | 1377 kg (3035.77 lbs.) |
| Max. weight | 1897 kg (4182.17 lbs.) |
| Max load | 520 kg (1146.4 lbs.) |
| Trunk (boot) space – minimum | 471 l (16.63 cu. ft.) |
| Trunk (boot) space – maximum | 1315 l (46.44 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4745 mm (186.81 in.) |
| Width | 1780 mm (70.08 in.) |
| Height | 1476 mm (58.11 in.) |
| Wheelbase | 2750 mm (108.27 in.) |
| Front track | 1528 mm (60.16 in.) |
| Rear (Back) track | 1495 mm (58.86 in.) |
| Front overhang | 1033 mm (40.67 in.) |
| Rear overhang | 962 mm (37.87 in.) |
| Minimum turning circle | 12.43 m (40.78 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears | 5 gears, manual transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Semi-independent, coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system), Hydraulic Steering |
| Tires size | 215/55 R16 |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The heart of this C5 variant is the 6FY (EW7A) 1.8-liter inline-four cylinder engine. This engine, a product of PSA Peugeot Citroën’s collaboration with Renault, is a naturally aspirated unit featuring a cast iron block and aluminum cylinder head. It utilizes a multi-point fuel injection system and a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its 125 horsepower output at 6000 rpm and 170 Nm (125 lb-ft) of torque at 3750 rpm. The five-speed manual transmission was the standard offering, providing a relatively conventional driving experience. The engine’s design prioritized refinement and fuel efficiency over outright performance.
Driving Characteristics
The 1.8i 16V C5 offered a comfortable and composed ride, typical of Citroën’s emphasis on hydropneumatic suspension (though this model used a more conventional setup). Acceleration was adequate for everyday driving, with a 0-60 mph time of around 9.9 seconds. However, it wasn’t a particularly sporty vehicle. The five-speed manual transmission was well-matched to the engine’s characteristics, providing reasonable gear spacing. Compared to the more powerful 2.0L or V6 variants, the 1.8L felt less responsive, particularly when fully loaded or tackling steep inclines. The gear ratios were tuned for fuel economy and smooth cruising rather than aggressive acceleration.
Equipment & Trim Levels
The 1.8i 16V C5 typically came equipped with features such as air conditioning, power windows, central locking, and an RDS radio. Higher trim levels, such as the Exclusive, added features like alloy wheels, automatic headlights and wipers, a multi-function display, and upgraded interior trim. Interior upholstery was generally cloth, with options for leather available on higher-spec models. Safety features included ABS brakes, front airbags, and seatbelt pretensioners. Optional extras included a sunroof, parking sensors, and a navigation system.
Chassis & Braking
The C5 I featured a MacPherson strut front suspension and a semi-independent torsion beam rear suspension. This setup provided a good balance between ride comfort and handling. The front brakes were ventilated discs, while the rear brakes were solid discs. The hydraulic power steering offered light and precise control. The suspension was tuned for comfort, absorbing bumps and imperfections in the road surface effectively. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The 1.8i 16V C5 was generally well-received by critics as a practical and comfortable family car. It was praised for its ride quality, spacious interior, and reasonable fuel economy. However, some reviewers found the engine to be somewhat underpowered, particularly when compared to competitors offering larger displacement engines. In terms of fuel economy, the 1.8L variant offered a noticeable improvement over the more powerful engines in the C5 lineup. Reliability was generally good, although some owners reported minor issues with the electrical system.
Legacy
The Citroën C5 I 1.8i 16V remains a relatively affordable and practical used car option. The 6FY engine is known for its durability, although regular maintenance is essential to prevent issues. Parts availability is generally good, and the C5’s relatively simple mechanical design makes it relatively easy to repair. While it may not offer the performance of some of its rivals, the 1.8L C5 provides a comfortable and reliable driving experience, making it a popular choice for budget-conscious buyers seeking a spacious and well-equipped family sedan.
