Citroën C2
Robust first-generation PSA naturally aspirated engine with belt drive. The head gasket is a known weakness of all TU engines; timing belt replacement every 60,000–90,000 km is mandatory. With consistent maintenance, mileages above 200,000 km are easily achievable.
Livelier C2
88 hp in the small C2 — noticeably livelier than the 73 hp base version; good fun on twisty city streets. No sports car, but a pleasant daily runner.
Engine Weaknesses 6
The TU3 is an interference engine — a snapped timing belt inevitably causes piston-to-valve contact and total engine destruction. Replacement interval 60,000–90,000 km or 5 years. Used cars with unknown service history are particularly at risk.
Symptoms: Engine suddenly won't start, loud bang on belt snap, metallic grinding as a precursor when belt is worn
The head gasket on the TU3 engine is a known weak point. Aided by overheating events or age-related material wear, coolant can enter the oil circuit.
Symptoms: White smoke from exhaust, mayonnaise residue on oil cap, coolant loss without visible leak, engine overheating
All TU engines tend to develop a leaking head gasket; by design these have an integrated oil return seal. This typically fails after 100,000–150,000 km — first visible on the left side of the engine above the alternator.
Symptoms: Oil spots on the left side of the engine, sweet coolant smell, dropping coolant level, white exhaust smoke in severe cases
The thermostat frequently sticks in the open position, preventing the engine from reaching operating temperature. Increased fuel consumption and risk of overheating if it sticks in the closed position.
Symptoms: Temperature gauge stays low, heater barely produces heat, increased consumption; rarely also overheating if stuck in closed position
The ignition coils on the TU3 engine are a frequently discussed weak point. Misfires on individual cylinders cause rough running, elevated emissions, and catalytic converter damage.
Symptoms: Stumbling especially at 2,000–3,000 rpm, engine running on three cylinders, engine check light illuminated, fault codes P0300–P0304
Ignition coils on the TU3 are considered the weakest link in the ignition system and fail regularly on older engines. A failed element causes noticeable misfires and can damage the catalytic converter through unburnt fuel.
Symptoms: Hesitation and misfires under load, rough idle, engine warning light, increased fuel consumption
Vehicle Weaknesses 5
The coil springs on the C2 snap in numbers due to inadequate corrosion protection. Citroën offers goodwill cover up to 84 months and 150,000 km. The front axle springs are particularly affected.
Brake discs on the C2 wear above average and need frequent replacement. Braking efficiency is regularly flagged at the MOT. Anti-roll bar links and tie rod ends also show noticeably premature wear.
The tailgate rusts at the lower edge from inside, and door flanges are also prone to corrosion. Rust blisters on the tailgate and door lower edges are typical on older examples from 7–10 years.
Ball joints and tie rod ends wear out early on the C2 and are regularly flagged at the MOT. Exhaust brackets also break frequently, causing annoying rattling and droning.
The C2 regularly shows electrical faults on the central locking, window regulators and lighting. Occasionally the lights or central locking fail completely.
