The Mazda CX-5 is one of the most reliable SUVs on the market — consistently rated highly in owner satisfaction surveys and low on dealer visit frequency. The SkyActiv petrol and diesel engines are well-engineered and durable. It's not fault-free but genuinely one of the better bets in the SUV class for long-term reliability.
Quick Facts — Mazda CX-5
Years
KE, KF (2012–present)
Common Engines
2.0/2.5 SkyActiv-G petrol; 2.0/2.2 SkyActiv-D diesel
6 Most Common Mazda CX-5 Problems
These are the faults most frequently seen on the Mazda CX-5 by UK garages — ranked by how commonly they occur and how serious they are.
DPF blockages are the most common fault on CX-5 diesels used predominantly for short journeys. The DPF warning light and reduced performance are the symptoms. A motorway run at sustained speed usually clears early blockages.
💷 Typical repair cost: £150–£1,200
EGR valve faults are occasionally reported on the 2.2 SkyActiv-D diesel — rough idle, EML and loss of power are the typical symptoms. Less common than on many rivals but worth knowing.
💷 Typical repair cost: £150–£380
Mazda Connect infotainment system on early KE models can suffer software glitches — screen freezes, Bluetooth dropouts and CarPlay connectivity issues. Software updates resolve most.
💷 Typical repair cost: £0 (software update)
Front suspension bushes and sway bar links can wear on higher mileage CX-5s — clunking over bumps and an MOT advisory are the typical outcome. More common on cars above 80,000 miles.
💷 Typical repair cost: £100–£280
Brake disc corrosion is common on CX-5s left unused for a few days — surface rust usually clears after a few firm applications but can cause juddering if severe.
💷 Typical repair cost: £120–£280 per axle if replacement needed
Windscreen stress cracks — small cracks that appear without obvious stone chip impact — are occasionally reported on KE CX-5 models. Check the windscreen carefully as a crack in the driver's swept zone is an MOT fail.
💷 Typical repair cost: £150–£400 (replacement)
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MOT Tips for the Mazda CX-5
DPF warning light on any diesel CX-5 is an automatic MOT fail — take a motorway run before your test if the light has been on recently. Front suspension bushes are a common advisory on higher-mileage examples. Check windscreen for stress cracks before the test.
Engine management light on before your MOT? It's an automatic fail. Run a
MotorLoom diagnostic for £1.99 to get the likely cause and repair cost before booking the test.
Tyres for the Mazda CX-5
Common CX-5 tyre sizes: 225/65 R17 and 225/55 R19. Mid-range tyres offer excellent value — get quotes from Tyres.net to compare prices before booking.
Summary
The Mazda CX-5 is a solid choice overall but being aware of its known weak points means you can spot early warning signs and budget for upcoming repairs. If your Mazda CX-5 has a warning light on or a symptom you're unsure about, a MotorLoom diagnostic report for £1.99 gives you likely fault causes, UK repair cost estimates and MOT risk for your exact vehicle instantly.
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