What the known faults on this Mazda CX-30 typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
The single priciest documented job on the 2020–2024 Mazda CX-30 is automatic gearbox service or rebuild at £350–£3,000. Few cars need every repair listed here · treat £1,970–£9,700 as the full exposure if one arrived with all of them.
Harsh engagement or jolting when the automatic gearbox shifts from first to second gear, primarily occurring when the transmission fluid is cold.
Inspect · Start the vehicle from cold, engage drive, and accelerate gently across the forecourt to force a 1st-2nd upshift. Feel for a pronounced mechanical shunt.
Cylinder-deactivation vibration; turbo (if fitted) oil checks.
Inspect · Test-drive for smoothness and check oil on turbo cars.
Infotainment freezes and rare i-Activsense sensor faults.
Inspect · Test the screen and driver-assist warnings.
Power tailgate fails to open fully, drops slightly after reaching the top, or emits a groaning noise due to failing spindle drive struts.
Inspect · Operate the power tailgate via the key fob. Observe the strut movement for juddering, listen for motor groans, and ensure the boot lid holds firmly at maximum height.
Front pad wear and light rotor rust on low-use cars.
Inspect · Inspect pads and rotors.
Power folding wing mirrors fail to fold or unfold completely, often accompanied by a grinding or clicking noise from the internal plastic gears.
Inspect · Cycle the mirror fold button on the driver's door switch pack three to four times. Listen for motor strain and watch for uneven or stalled movement.
Road noise and small interior rattles.
Inspect · Listen for rattles over bumps.
Mild hesitation or a subtle surging sensation at steady cruising speeds as the engine transitions between standard spark ignition and compression ignition modes.
Inspect · Hold a steady 40 mph on a test drive using light throttle. Monitor the rev counter for slight fluctuations and feel for subtle surging through the drivetrain.
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.