2014–2017 Mazda 3 (BM/BN)
Browse our directory of 2014–2017 Mazda 3 (BM/BN) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2014–2017 Mazda 3 (BM/BN) has 5 known issues. 1 of these are classified as serious faults that could be expensive to repair. 1 are moderate concerns worth inspecting before purchase.
2.2 SkyActiv-D DPF and Oil Dilution
SeriousShort-trip town use causes frequent interrupted DPF regenerations on the 2.2 diesel, allowing diesel to dilute the engine oil. This can accelerate timing-chain, turbo and bottom-end wear. The problem is severe enough to warrant regular oil-level checks between services.
Symptoms: Rising oil level on dipstick, DPF warning light...
Est. repair cost: £300–£4,000
Brake Disc Warping
ModerateThe front brake discs on BM/BN Mazda3s are prone to developing run-out and thickness variation, causing a judder through the steering wheel and brake pedal during braking. This is more common on cars used heavily in town with frequent low-speed stops.
Symptoms: Vibration through steering wheel under braking, Pulsing brake pedal...
Est. repair cost: £150–£350 per axle
Infotainment Ghost Touching
MinorThe touchscreen registers inputs that aren't happening, often while the car is stationary or in slow traffic.
Symptoms: Navigation changing by itself, Radio stations jumping...
Est. repair cost: £200–£500
Folding Mirror Motor Failure
MinorThe plastic gears in the mirror motor strip, causing the mirrors to get stuck or make a clicking noise.
Symptoms: Mirror won't fold/unfold, Grinding noise
Est. repair cost: £150–£300 per mirror
12V Battery Premature Failure
MinorThe Mazda3 BM/BN is known for draining its 12V battery faster than expected, particularly on models with the i-stop (start-stop) system. Owners frequently report needing replacement batteries after just two to three years.
Symptoms: Slow cranking on cold mornings, Stop/start system not engaging...
Est. repair cost: £100–£180
Buying Tips for the 2014–2017 Mazda 3 (BM/BN)
- ✓Prefer the 2.0 SkyActiv-G petrol over any diesel.
- ✓Check the infotainment screen for spider-web cracking (delamination).
- ✓Test the folding mirrors multiple times.
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