The Insignia B is Opel's last GM-platform mid-size sedan, lighter and more refined than its predecessor. The 1.5 turbo petrol suits moderate-mileage drivers who want a spacious car without diesel complexity. Generally solid, though the turbocharged direct-injection engine requires quality fuel and regular servicing to avoid carbon buildup and turbo issues.
Spacious and comfortable interior
Cheaper to run than diesel variants
Turbo wastegate prone to sticking
Oil leaks flagged at TÜV inspections
Buy if: You want a roomy mid-size car with low purchase cost and are comfortable with regular oil level checks and quality fuel.
Avoid if: You primarily do short trips in town (turbo carbon buildup) or need a car that will pass TÜV without oil leak worries at higher mileage.
Expected Annual Maintenance Costs
Common Problems
Wastegate arm sticks or snaps due to carbon buildup or mechanical fatigue · more· less
The turbo wastegate actuator on the 1.5 turbo is a documented weak point. The valve arm can snap at the swivel joint, typically after 60,000-100,000 km, causing P0299 (underboost) or P0234 (overboost) fault codes, limp mode, and sudden power loss. Opel updated the part design, repositioning the swivel joint. If only the actuator needs replacing, specialist repair costs around 500-600 euro. If the turbo internals are damaged from running in limp mode or overboost, full turbo replacement costs 1,200-2,500 euro. Cars driven gently on short trips are more susceptible because carbon builds up on the wastegate mechanism. Regular spirited driving and premium fuel help prevent this.
Oil pan gasket and valve cover seals deteriorate, causing visible oil loss at TÜV · more· less
German TÜV data shows oil leaks are the Insignia B's most common inspection failure. By 8-9 years of age, roughly 1 in 10 cars fails TÜV for oil loss. The oil pan gasket and valve cover seal are the usual culprits. The 1.5 turbo petrol is less affected than the 2.0 diesel (which has the infamous oil pickup seal issue), but oil weeping from gaskets is still common. Repair costs range from 400 euro for a valve cover reseal at an independent garage to 1,200 euro if the oil pan gasket requires subframe work. Check under the car for fresh oil drips and monitor oil level between services.
Catalyst efficiency drops below threshold, triggering persistent P0420 fault code · more· less
Several Insignia B 1.5 turbo owners with the D15SFT engine code report persistent P0420 error codes indicating the catalytic converter has fallen below efficiency threshold. In some cases the cat needs full replacement, which costs 1,500-2,700 euro with an OEM part from Opel. However, the fault can sometimes be caused by a faulty downstream oxygen sensor (200-400 euro) or exhaust leak, so proper diagnosis is essential before committing to a converter replacement. This issue appears uncommon but can be expensive if it occurs. Short-trip driving and low-quality fuel accelerate catalyst degradation.
Coil springs crack and dampers leak, particularly on rough road surfaces · more· less
TÜV reports flag suspension components as an above-average concern on the Insignia B. Coil springs can develop cracks and snap, particularly the rear springs. Shock absorbers may begin to leak or lose damping effectiveness after 80,000-120,000 km. A single spring replacement costs 150-250 euro per corner including labor. Full damper replacement runs 200-350 euro per shock with aftermarket parts (Monroe, Bilstein B4). Complete front or rear axle overhaul with springs and dampers can reach 800-1,000 euro.
Navigation freezes, touchscreen becomes unresponsive, wireless charging stops working · more· less
The Insignia B's Multimedia Navi Pro system is known for occasional crashes and freezes. The navigation system may crash mid-route and require a full restart. Wireless smartphone charging (Qi) often stops working with certain phone cases or newer phone models. Software updates via USB can resolve some issues, but a failed firmware flash can brick the entire unit, requiring hardware replacement at 800-1,200 euro. Simpler software-related fixes run 200-400 euro at a dealer. The issue is annoying rather than safety-critical, but affects daily usability.
Poorly sealed body panels or degraded rubber seals allow rainwater into the interior · more· less
Some Insignia B owners report water leaking into the boot area, particularly the Sports Tourer variant. Water typically enters through degraded rubber door seals, poorly sealed roof panel covers, or the rear wiper washer fluid pipe routing. The leak can damage electronics in the boot area if left unchecked. Repair ranges from 150 euro for new seals and sealant application to 500 euro if wiring or electronics need attention. Check for damp carpet in the boot and rear footwells during any pre-purchase inspection.
Moderate reliability with some age-related concerns
The 1.5 turbo petrol Insignia B avoids the diesel-specific problems (DPF, AdBlue, oil pickup seal) that plague the 2.0 CDTI version. The main watch points are the turbo wastegate mechanism, oil seal integrity at higher mileage, and the infotainment system. With proper maintenance, quality fuel, and regular oil level checks, most examples reach 150,000 km without major engine issues. Budget for turbo-related and seal repairs as the car ages.
Recalls and Technical Service Bulletins
Door lock moisture ingress causing fire risk (2017-2018 production)
Verify completed
Fuel hose chafing against support bracket causing fuel leak and fire risk (July 2016 - November 2018)
Verify completed
Fuel line bundle clip chafing against fuel pump hose (model year 2018, until September 2018)
Verify completed
Rear seat belt incorrect routing at anchor point (2017-2018)
Verify completed
Brake pedal plate may detach under load (various production dates)
Verify completed
The Insignia B has had multiple safety recalls, particularly for 2017-2018 production vehicles. Contact an Opel dealer with the VIN to verify all recalls have been completed before purchase. The fuel line and door lock recalls are particularly important due to fire risk.
Warranty Status
Factory warranty (2 years)
Expired on all used Insignia B models
Rust perforation warranty (12 years)
May still apply on 2017+ models until 2029+
Extended warranty availability
Available through Opel dealers and third-party providers
All Insignia B models are outside their original 2-year Opel factory warranty. The 12-year rust perforation warranty may still be active for newer production years. Third-party extended warranties are available but read exclusions carefully, particularly around turbo and electrical components.
This report is for informational purposes only and does not constitute professional advice. Estimates may be inaccurate. Always have a qualified specialist inspect the vehicle before purchase. We accept no liability for decisions made based on this information.