Opel Astra
Modern PSA/Stellantis four-cylinder with excellent fuel consumption, but structurally undersized camshaft chain (7 mm), subject to a mass recall with warranty extension to 10 years/240,000 km. AdBlue system and EGR prone to faults with short-trip use.
Astra K diesel PSA
77 kW diesel in the Astra K – economical, but a bit tight.
Engine Weaknesses 5
The original 7 mm camshaft chain wears prematurely and can break, causing severe engine damage. Stellantis recalled over 141,700 vehicles in Germany alone. Warranty extended to 10 years/240,000 km.
Symptoms: Unusual knocking or rattling noises from the engine bay, especially on cold start. In the worst case sudden engine failure while driving.
The AdBlue dosing valve and the NOx sensor fail regularly. The pump and tank are one assembly and cannot be replaced individually, making repairs expensive.
Symptoms: AdBlue warning light on, engine management light active, elevated AdBlue consumption. Vehicle risks entering limp mode after several warning cycles.
The diesel particulate filter blocks with frequent short trips as regeneration temperature is not reached. A recall for approx. 1,100 Grandland X vehicles for defective DPF was carried out.
Symptoms: Heavy power loss, elevated fuel consumption, engine management light, smoke clouds when accelerating. Vehicle enters limp mode.
The EGR valve carbonises with frequent short-trip use. Typical symptoms are engine warning light, fluctuating power and black smoke. Cleaning or replacement necessary.
Symptoms: Engine management light, rough running, power loss under part throttle, black smoke when accelerating.
Instead of a proper gasket the DV5RD uses RTV sealant on the valve cover, which becomes porous over time. Oil leaks appear even on younger vehicles.
Symptoms: Oil smell in engine bay, visible oil stains on the valve cover and below, smoke if oil drips onto hot components.
Vehicle Weaknesses 14
The clutch slave cylinder seal dissolves and contaminates the hydraulic system. Affects diesel manual gearbox models 2016–2018. Recall number 181803130.
The M32 6-speed manual gearbox shows stiff gear engagement especially cold, particularly 2nd and 3rd gears. Air in the clutch hydraulics or a faulty clutch slave cylinder are the common causes.
Water from the wheel arch runs onto the plastic mounting bracket of the engine carrier and promotes corrosion from the inside out. Rust warranty applies for 12 years with a complete service history.
Rear coil springs can break prematurely due to corrosion at the spring seat, sometimes as early as 38,000 km. Rust grips the spring root. Grounds for MOT failure.
LED headlights on the Astra K fail sporadically due to loose connectors and faulty control units. Mainly affects early production years 2015–2017.
The Astra K shows chronic oil loss at various gaskets according to ADAC and MOT reports. Visible oil residue on the underbody leads to rejection at the MOT.
Squealing noises from the EPS steering at high temperatures are a known Astra K issue. In severe cases the steering assist cuts out. Cause: steering rack wear or electrical connections.
The display on the Navi 900 IntelliLink flickers, stays black, or shows colour errors. Hardware defect at the display panel. Replacement costs around €160 (used) to €1,250 (new).
The first HMI module in the Astra K (pre-2016 recall) freezes or becomes unresponsive. Sporadic audio dropouts can still occur even after updates.
The infotainment system on the Astra K regularly freezes or crashes. Navigation and Apple CarPlay stop responding. Often fixable by a software update, but the problem returns.
The rear brake discs on the Astra K corrode noticeably faster than the fronts according to MOT reports. With standing time or low brake usage they rust up and must be replaced prematurely.
On the Astra K the fresh air channel drain becomes blocked by leaves and debris. Water then runs into the cabin (driver's footwell or rear left).
The blend door actuator in the Astra K fails. Temperature can then no longer be regulated — regardless of the dial position, only cold or only hot air comes out.
The A-pillar trim on the Astra K detaches or warps and rattles while driving. Also crackling noises from the passenger door.
Reports & Tests
Oil loss remains the dominant problem. On the Astra K, infotainment failures, juddering 1.4 turbo engines and fogged driver assistance camera lenses are additional issues. Recalls affected defective airbag inflators and brake master cylinders.
