Mazda 3 BM
Weaknesses, engine ratings and buying advice
165 PS
3 · Benzin
Strongest Petrol — Balanced and Quick
Fun to Drive!75–116 PS
1.5L SkyActiv-G Benzin
6 weaknesses
Good Choice150–184 PS
2.2L SkyActiv-D Diesel
7 weaknesses
Stay Away!Body Variants
The Mazda 3 BM is available as Sedan and Hatchback — choose your body type for specific insurance data:
Generations
Engine Overview
The Mazda 3 BM is available with 3 engine variants — from 75 to 184 hp.
2.2-litre SkyActiv-D with extremely low compression ratio (14:1) for a diesel. Clean combustion without a NOx storage catalytic converter, long-lived with regular oil changes.
- !! Camshaft Seized from 80,000 km
Insufficient surface hardening of the exhaust camshaft leads to heavy wear with metal particles in the oil. Secondary damage to the vacuum pump and turbocharger is possible. Primarily affects build years 2012–2015.
Symptoms: Warning 'Low oil pressure – engine damage possible', fault code P0056F, jerky gearbox, metal particles visible in oil on change. - !! Severe Oil Dilution from Fuel Ingress from 30,000 km
DPF regeneration injects fuel into the cylinder, which passes the piston and enters the oil. Dilution rates of up to 20–25% are possible. Increased engine wear and turbocharger bearing damage can follow.
Symptoms: Oil level rises above MAX mark, fuel smell in oil, onboard computer shortens oil change interval, up to 20% diesel detectable in oil analysis. - !! Leaking Injector Seals from 100,000 km
Failed flame protection seals on the injectors allow hot combustion gases into the oil system. The oil cokes up and blocks the oil sump strainer, leading to pressure loss and engine damage.
Symptoms: Rapidly ageing oil with fuel smell, elevated oil consumption, engine oil warning light, in severe cases oil pressure loss and piston damage.
+ 4 more engine weaknesses + vehicle weaknesses
1.5-litre SkyActiv-G with high compression ratio (13:1) and chain drive. Economical and lightweight with very good efficiency.
- !! Recall: fuel pump impeller can crack
The low-pressure fuel pump impeller can crack and deform, potentially causing engine stall while driving. Affected: Mazda2 2019–2020, CX-3 2019, Mazda3 2018.
Symptoms: Sudden engine stall while driving, engine start problems, fuel supply interruption - !! Carbon build-up on intake valves from 80,000 km
Direct-injection carbon build-up on intake valves from crankcase breather oil mist. Power loss, misfires and increased fuel consumption from around 80,000 km without prior treatment.
Symptoms: Rough cold start, power loss under full throttle, increased fuel consumption, uneven idle - !! Switchable hydraulic lash adjusters (HLA) with air bubbles
On certain vehicles, switchable hydraulic lash adjusters (HLA) are known to trap air bubbles in the oil gallery. Mazda has released modified HLAs as a fix.
Symptoms: Loud tapping or knocking immediately after a cold start; noise disappears once the engine is fully warmed up
+ 3 more engine weaknesses + vehicle weaknesses
2.0-litre SkyActiv-G with 13:1 compression ratio and chain drive. Core engine of the SkyActiv fleet with a wide power range from 88 to 121 kW.
- !! Carbon build-up on intake valves from 110,000 km
Direct-injection carbon build-up on intake valves from crankcase breather oil mist. Typically occurs between 100,000–160,000 km. Walnut blasting is the only lasting solution.
Symptoms: Rough cold start with misfire codes P0300–P0304, sluggish throttle response, increased fuel consumption - !! Low oil pressure — oil pump pressure relief valve from 80,000 km
Particularly on early build years 2012–2014, contamination in the oil pump pressure relief valve can reduce oil pressure. Persistently low oil pressure accelerates bearing wear considerably.
Symptoms: Oil pressure warning light illuminates, knocking noises from the engine, increased engine noise at low revs - ! Defective coolant control valve (thermostat)
A manufacturing deviation in the electric coolant control valve allows coolant to enter the dry chamber. The valve opens too early. TSI R054-21 affects all SkyActiv-G engines.
Symptoms: Extended warm-up phase, blue coolant warning light, poor heater output at idle
+ 3 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| MZD Connect infotainment freezes or fails to start The MZD Connect system crashes, shows a black screen or fails to recognise navigation and USB devices. Problems occur particularly in cold temperatures. The cause is often the SD card or faulty firmware. Symptoms: Screen stays black on startup, navigation unavailable, USB devices not recognised, system unresponsive to inputs | Low | |
| Battery failure as the most common breakdown cause According to ADAC statistics, battery failure is the most common breakdown cause on the Mazda 3 BM. Especially on vehicles with frequent short trips or start-stop systems, the battery is due for replacement after 4–5 years. Symptoms: Engine will not start, sluggish starter motor, ECU errors after voltage drop | Low |
Test Reports
TÜV Report 2026
Broken springs and failed suspension components cloud the picture. Brake disc wear is notably high.
2025-11ADAC Breakdown Statistics 2025
The Mazda3 BM sits in the mid-field of the compact class in breakdown statistics.
2025-04Top Reported Issues
Alternatives
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Known Problems and Issues +
A total of 25 weaknesses have been documented for the Mazda 3 BM (2013–2018) — 19 engine-related and 6 vehicle-related. One problem engine: SH-VPTS (2.2L SkyActiv-D). Typical issues affect Electronics, Suspension, Interior, Brakes. Considered reliable: P5-VPS (1.5L SkyActiv-G), PE-VPS (2.0L SkyActiv-G).
3 (SH-VPTS, 2013–2018) — Stay Away!: Camshaft Seized, Severe Oil Dilution from Fuel Ingress, Leaking Injector Seals. Power: 150 PS.
What to watch out for with the Mazda 3? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Mazda 3 BM have? +
What should I look for when buying a used Mazda 3 BM? +
Which engine is recommended? +
Which Mazda 3 BM engine is the most reliable? +
Which Mazda 3 BM engine is the most fun? +
Is the Mazda 3 BM worth buying used? +
What horsepower variants are available for the Mazda 3 BM? +
Last updated: February 2026 · All information without guarantee