Citroën DS3
Stronger BlueHDi variant of the 1.6-litre diesel with 120 hp. Punchy and economical, ideal for compact and mid-range vehicles. Often paired with the EAT6 automatic.
Punchy DS3 diesel
120 hp BlueHDi in the DS3 — economical and punchy, but diesel in a lifestyle car?
Engine Weaknesses 6
Identical issue to the BlueHDi 100: the integrated level sensor in the urea tank fails and cannot be replaced individually. Without goodwill or warranty, tank replacement costs up to €1,200. Cold winters accelerate crystallisation problems.
Symptoms: Warning message 'Check AdBlue', countdown on instrument cluster, start lockout after several cycles
The electric turbo actuator on the BlueHDi 120 can fail and lock the turbocharger in one position. This results in permanent boost loss or excessive boost pressure. Repair often requires replacing the complete turbocharger.
Symptoms: Limp mode, weak acceleration, boost pressure faults P0234/P0299, turbo whistling noise
On the BlueHDi-120, soot builds up intensively in the EGR valve and cooler. Technical reports list EGR damage among the five most common workshop jobs on this engine, alongside injector, FAP and turbo problems. Cleaning every 60,000 km prevents consequential damage.
Symptoms: Engine warning light, limp mode, increased consumption, hesitation at part load
Despite the SCR system, the BlueHDi-120 DPF can clog prematurely in pure urban use. When forced post-injection for filter regeneration happens with a cold engine, fuel enters the oil and additionally damages bearings and turbo.
Symptoms: DPF warning light, heavy smoke, rising oil level, declining engine power
The pump integrated into the AdBlue tank corrodes from moisture on the PCB. Fault code P20EE (SCR efficiency) or P20E8 (underpressure). Complete tank replacement required as the pump is not available separately.
Symptoms: Warning 'exhaust aftertreatment fault', countdown message 'XXX km until engine lockout', fault codes P20E8/P20EE/P20F6. Engine will not start once the zero reading is reached.
The NOx sensor permanently outputs the substitute value of 20 ppm instead of real readings. The ECU detects this and warns of emissions limit exceedance. Replacement must be calibrated with Diagbox.
Symptoms: Engine warning light, exhaust aftertreatment fault message, rough idle under lean operation, immediate re-failure after replacement if not calibrated.
Vehicle Weaknesses 6
The German Federal Motor Transport Authority (KBA) issued a recall for the Citroën DS3 due to defective airbag inflators that can deploy uncontrollably and release metal fragments.
Electric window regulators are one of the most common failure points on the DS3 I. Cables snap or motors fail, typically from 60,000–80,000 km. The costly replacement module usually has to be replaced as a complete unit.
The DS3 I air conditioning compressor fails relatively frequently between 70,000–100,000 km. Leaking AC hoses and refrigerant loss are also known weak points. Repair requires compressor replacement and system recharge.
The DS3 I exhaust system corrodes heavily. TÜV reports and owner experience confirm above-average corrosion on exhaust pipes, clamps and joints, especially on vehicles used predominantly for short trips.
On the DS3 I, front control arm bushings and anti-roll bar rubbers wear faster than expected. TÜV defects and owner reports confirm above-average wear of the front suspension mounts.
DS3 models with xenon headlights in particular develop condensation inside the headlight housing from around 50,000 km due to leaking rubber seals. This impairs light output and results in MOT failures.
