2021 Mazda 3 2.0L Petrol · OV21 UPH

The 2.0-litre Skyactiv-G petrol engine in this Mazda 3 typically returns around 45-50 mpg on a combined cycle in real-world driving, helped by Mazda's mild-hybrid technology on this generation. Road tax sits in a reasonable band for a Euro 6AP petrol vehicle, with standard rate VED applying. Insurance should fall into group 15-18 territory for this engine and trim, keeping premiums moderate. Routine maintenance is generally affordable, with oil services in the £150-£200 range and major items such as brake pads and discs relatively straightforward. Based on the observed annual mileage of around 10,500 miles and typical costs for this model, expect annual running costs in the region of £1,400-£1,700 covering fuel, tax, insurance, and routine maintenance. This excludes any non-routine repairs.

Begin with the front brake pads, which were flagged as wearing thin at the July 2026 MOT; measure remaining pad material and inspect the discs for lipping or scoring. Examine the front tyres carefully for uneven wear patterns, particularly inner or outer edge wear, as the 2025 advisory noted a tyre worn on its edge, which can point to alignment or suspension component wear. Inspect the windscreen for the chip noted in 2024 and any new damage, and check that any repairs have not spread into the driver's critical vision area. For the model broadly, pay attention to the rear brake shoes and adjusters, as these are known wear items on Mazda 3s of this generation. Lift the car if possible to check for corrosion on the underbody, particularly around suspension arms and exhaust mounting points. Finally, confirm the operation of all electrical systems including the infotainment screen, which has been a known weak point on early Mazda 3 models.