Mazda CX-5 KE 2.0 Skyactiv-G

Like all gasoline direct injection engines, the 2.0 Skyactiv-G sprays fuel directly into the combustion chamber rather than over the intake valves. Oil vapour from the PCV system coats the intake valve stems and hardens into carbon deposits over time. Symptoms typically appear between 100,000-150,000 km: rough idle, slight misfires, hesitation on cold starts. Mazda incorporated design features to reduce buildup (oil separator, high valve temperatures), so the issue is less severe than in some other GDI engines. Walnut blasting to clean the valves costs €300-500 at a specialist, while a dealer may charge €500-800. Most owners will not need this before 120,000+ km, and many reach 200,000 km without noticeable symptoms. Using quality synthetic oil (0W-20) and avoiding excessive short trips helps delay the onset.

This is the most commonly reported issue on the CX-5 across all generations. Mazda has issued multiple Technical Service Bulletins without fully resolving the root cause. The internal plastic gears degrade from repeated use and moisture ingress. One mirror typically fails first, with the other following within 6-12 months. Dealer replacement of a full mirror assembly costs €350-500 per side. However, aftermarket repair kits with upgraded metal gears are available for €15-30 and can be fitted DIY or at a local garage for under €100 total. Disabling the auto-fold function via the door switch extends the lifespan of the gears significantly. Mazda has offered goodwill replacements on cars under 5 years old in some markets.

An unusually high number of stress fractures have been reported on CX-5 windscreens. Cracks appear spontaneously, often starting near the top centre, without any stone impact. Replacement technicians have confirmed these as stress fractures rather than impact damage. In Taiwan, over 100 owners in CX-5 clubs reported windscreen replacements within 2 years, from a total of only 4,000 cars sold. The likely cause is the glass being bonded to the body to increase rigidity - when the body flexes over rough roads, the glass cannot flex with it. Early production cars (2012-2014) appear most susceptible. OEM replacement with any sensor recalibration costs €500-800; aftermarket glass runs €300-500. Mazda Taiwan offered free replacement; European coverage varies by dealer.

2013-2016 CX-5 models may develop a knocking or squeaking noise from the front suspension. Mazda issued a TSB identifying two causes: the bump stopper contacting the strut bearing when compressed (causing a popping noise), and the front lower arm bushing making stick-slip noises in wet conditions. Mazda revised the strut bearing material and production method for later production runs. Replacement of strut top mounts costs €150-250 per side; lower arm bushing replacement runs €200-300 per side at an independent garage. The issue is annoying but not a safety concern and does not affect handling.

Mazda issued TSB 04-005/15 for 2013-2014 CX-5 models where the outer rear brake pads would show severe wear while the inner pads showed little or no wear. The cause was corrosion from road salt causing the outer pad to stick in the caliper bracket. Mazda revised the brake pad back plate treatment from October 2013 production onwards. The fix involves installing modified rear brake pads, new caliper anti-rattle clips, cleaning the caliper slides of rust, and applying high-temperature grease. Cost is €150-350 including new pads and rotors if needed. This issue primarily affects cars in salt-heavy climates and early-production 2013 models.

Mazda issued a safety recall (R/2018/236) for CX-5 models built from January 2012 to January 2016 where the vacuum pump that assists the braking system may wear prematurely. When pressing the brake pedal quickly at low engine speeds, servo assistance is reduced. In severe cases this could lead to reduced braking performance. The recall covers free replacement of the vacuum pump. Always verify with the VIN that this recall has been completed. If buying a car where the recall was not done and the pump has failed, replacement costs €300-700 depending on whether you use an independent shop or dealer.