Fault File
All models / All cars / Small SUVs / Mazda CX-5

Mazda CX-5

All generations and engines together · 66,781 MOT tests in the 2025 data · typical mileage at age 7: 64k

First-time failure at age 7
17.2%
Across 7,994 tests. The average across all tracked models is 19.5%.
Rank at age 7
99 of 239
1 = lowest failure rate among the models tracked.
Typical mileage at age 7
64k miles
Check the mileage view below; low-mileage models can look better by age than they are.

Generation

Split by first-registration year. Cars registered in a changeover year can belong to either generation.

How this model wears

Mazda CX-5Class average, all tracked models

Known issues

Measured

Computed from DVSA MOT results, all of Great Britain, 2025. Nothing here is opinion.

What testers flag

Share of tests where each item was recorded. The dark tick is the class average across all tracked models; bars are scaled within each group.

Faults with the car itself

The rows that judge the model rather than its keeper. 31,509 tests in this band.

A suspension pin, bush or joint excessively worn
Advisory
10.0%class 5.9%
Brake pipe damaged or excessively corroded
Advisory
7.0%class 1.9%
A suspension component excessively damaged or corroded
Advisory
4.7%class 1.3%
Steering rack gaiter or ball joint dust cover damaged or deteriorated
Minor
4.6%class 0.7%
A suspension joint dust cover severely deteriorated
Minor
4.6%class 0.6%
A spring or spring component fractured or seriously weakened
Fail
3.4%class 1.4%
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
Advisory
1.7%class 2.3%
A steering ball joint with excessive wear or free play
Fail
1.6%class 0.4%
A steering ball joint with excessive wear or free play
Advisory
1.1%class 0.4%
Engine MIL illuminated indicating a malfunction
Fail
0.9%class 0.4%

Wear, upkeep and luck

Tyres, pads and stone chips say more about how the car was driven and maintained than about how it was built.

Tyre tread depth not in accordance with the requirements
Advisory
24.2%class 22.9%
A brake lining or pad worn below 1.5mm
Advisory
16.3%class 8.7%
A tyre seriously damaged
Advisory
15.6%class 12.7%
Brake disc or drum excessively weakened, insecure or fractured
Advisory
13.2%class 10.1%
Child Seat fitted not allowing full inspection of adult belt
Advisory
4.3%class 2.2%
Brake disc or drum significantly and obviously worn
Advisory
3.5%class 3.4%
A brake lining or pad worn below 1.5mm
Fail
3.4%class 1.6%
Nail in tyre
Advisory
2.5%class 1.6%

Unconfirmed issues

Reported

Owner folklore from forums and the motoring press. Most of it never shows up in an MOT, which is why this section exists at all.

2.2 diesel turbo and EGR trouble

Confirmed pattern

The 2.2 Skyactiv-D turbo shows up repeatedly with low boost pressure, whistling on acceleration, and EGR valve fault codes, mostly on cars used for short town trips rather than motorway miles. Turbo replacement runs roughly £1,500-£2,500, and there's a separate EU/UK recall (2012-2016 cars) for a short circuit in the injector control wiring that can stop the engine and cut brake assistance. Owners on Honest John's forum are blunt about it: several regulars say diesel CX-5s are best avoided unless bought new and kept on a warranty.

Reported 50-100k miles, diesel only · sources: Honest John carbycar and forum, AutoInsider CX-5 problem reports, car-recalls.eu

Cylinder head and oil consumption on early diesels

Emerging

Earlier 2.2D cars (broadly 2012-2016) have a recurring pattern of head gasket failure and head warping, alongside heavier than expected oil consumption, usually surfacing in the 60-90k mile range. Repair bills for head work are among the biggest a CX-5 owner will face, commonly quoted around £4,000-£5,000+. Mazda has not issued a public TSB specific to this, so treat it as a known weak spot rather than an acknowledged fault.

Reported 60-90k miles, diesel only · sources: Honest John carbycar, motorandwheels.com CX-5 year-by-year complaints

Front-end clunk over bumps and on lock

Partly in the MOT data

One of the most persistent owner complaints across every generation: a metallic clunk or knock from the front end, worst at low speed over speed bumps or when turning. Forum diagnosis threads (running from 2013 cars to 2023 cars) land on several different culprits, loose crossbar bolts under the windscreen near the strut mount, worn sway bar end links, or tired strut mount bushings, and owners often replace control arms first without it curing the noise. This lines up with the measured MOT data for this class, where suspension is the standout fault; the twist is that the forums chase control arms and bushes, while a fair few real fixes turn out to be simple bolts working loose rather than worn parts.

Reported 60k-180k+ miles, all generations · sources: Mazdas247 forum, Mazda Forum (mazdaforum.com), r/CX5

MZD Connect infotainment freezing and battery drain

Emerging

The MZD Connect touchscreen and rotary controller can freeze, reboot, or lose Bluetooth/Apple CarPlay pairing, and several owners report a parasitic drain from the accessory circuit staying live with the ignition off, flattening the battery overnight. It's an annoyance rather than a safety issue and rarely shows up before 3-4 years old. No manufacturer recall covers it; a battery or infotainment module reset is the usual dealer response.

Reported from 3+ years old, all generations · sources: motorandwheels.com, AutoInsider CX-5 problem reports

SCR/AdBlue wiring and fuel pump faults on later diesels

Confirmed pattern

Diesel CX-5s built 2018-2020 are covered by an official recall for SCR (AdBlue) system wiring that can suffer damage from contamination, affecting emissions system function. A separate 2018-model recall covers a low-pressure fuel pump impeller that can deform and stop the engine starting. Both are free dealer fixes if the recall hasn't already been done, so check the V5C and MOT history for recall work outstanding.

2018-2020 diesel · sources: car-recalls.eu (UK/EU recall database), Honest John carbycar

DSG-style jerkiness and clutch judder on manuals

Disputed

Some owners describe a judder or hesitation from the clutch on manual cars, and low-speed jerkiness from the 6-speed automatic, though opinions are split on whether this is a fault or just how the car drives. It's not tied to a specific mileage and doesn't appear in any recall or TSB, so it sits more in the category of things to check on a test drive than a confirmed mechanical problem.

Reported at various mileages · sources: Honest John carbycar, motorandwheels.com

Viewing one? Ask this

Built from the two sections above.

Cold-start the diesel and listen for a turbo whistle or rattle on light acceleration. A whistle under load points at the known 2.2D turbo weak spot; get it checked before buying.
Check the service history and any dealer paperwork for EGR valve or injector work on diesel cars. Repeated EGR codes or injector wiring complaints are a recognised pattern on early 2.2D cars.
Drive slowly over a speed bump and turn the wheel on full lock in a car park. A metallic clunk from the front end is the most commonly reported CX-5 fault; ask when it was last investigated.
Check the VIN or V5C against the DVSA recall checker before agreeing a price. 2012-2016 injector wiring, 2018 fuel pump, and 2018-2020 SCR wiring recalls should all show as completed.
Pair a phone via CarPlay/Android Auto and leave the infotainment running for a few minutes. Freezing, rebooting, or dropped Bluetooth points to the known MZD Connect gremlins.
Leave the car locked overnight if possible, or ask the seller about battery history. A battery that's needed replacing more than once suggests the reported accessory-drain fault.
On a diesel, ask for an oil level check or dipstick reading against the service book. Oil sitting noticeably above the max mark can mean fuel dilution linked to the head gasket and consumption issue.

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