Citroën DS5
Top diesel with 180 hp and SCR cat. Very punchy with high torque, usually paired with EAT8 automatic. Ideal for heavy SUVs and long-distance vehicles.
SUV diesel with automatic
180 hp plus EAT8 in the C5 Aircross — a very harmonious pairing; a confident motorway mile-eater.
Engine Weaknesses 6
BlueHDi engines with SCR urea injection suffer from faulty AdBlue tanks and pumps, especially in winter. The faulty tank unit (pump and sensor integrated) cannot be replaced separately — cost €1,000–2,000. Engine will not start after failure.
Symptoms: AdBlue warning light, engine warning light, start lockout after countdown warning, fault codes.
The BlueHDi DW10F variant is an interference engine. Timing belt replacement requires specific PSA special tools (NTN-SNR kit). Incorrect installation leads to engine damage. Interval: 5 years or 100,000 km.
Symptoms: Sudden engine stall, metallic noises, no restart on snap.
BlueHDi DPF regenerates actively via post-injection. With insufficient running time, unburnt fuel passes into the engine oil (oil dilution). Regular oil level checks and motorway drives for regeneration are mandatory.
Symptoms: DPF warning light, oil level rising, engine warning light, strong diesel smell in oil.
The water pump on the DW10 BlueHDi 180 is belt-driven and can seize on bearing failure, shearing off the timing belt. Documented pre-failure damage on DW10 variants from 50,000 km. Engine damage from valve contact follows.
Symptoms: Squealing from the timing belt area, coolant loss, sudden engine stall with loud bang. After stalling: engine will not restart.
Despite BlueHDi technology, the EGR valve remains susceptible to soot deposits. The intercooler can be internally coated from recirculated EGR exhaust gases with oil mist. Engine warning light and power reduction follow.
Symptoms: Hesitation at 1,500–2,500 rpm, engine warning light, increased fuel consumption.
On the DW10 BlueHDi 180, NOx sensors fail and AdBlue pumps corrode, producing the same fault codes as other BlueHDi variants (P20E8, P20EE). Costly repair due to complete AdBlue tank replacement.
Symptoms: Exhaust aftertreatment fault warning, countdown display until engine lockout, rough idle. Fault codes P20E8/P20EE/P204E. After limit: engine start refused.
Vehicle Weaknesses 5
The 6-speed EAT6 automatic in the DS5 I is particularly prone to faults in solenoid valves and the gearbox oil pump between 60,000 and 100,000 km. Jerky shifts, delayed kickdown and gearbox fault codes follow.
Control arm bushes and ball joints on the DS5 I front axle need replacing at least once during the vehicle's life on many cars. Noises over crosswise expansion joints and uneven tyre wear are typical signs.
The MyWay infotainment system in the DS5 I is prone to freezing, spontaneous reboots and screen blackouts while driving. The navigation system stops working reliably after a system crash. Software updates only partially help.
The climate control ECU in the DS5 I develops faults over time. Temperature sensors and blower motors fail, causing the climate system to regulate incorrectly. The A/C compressor shows declining output from 100,000 km.
The DS5 I shows rust at sills and wheel arch edges, especially on early build years without regular cavity sealing. Stone chip damage on the bonnet accelerates corrosion.
