Mazda Mazda3 II (BL) (2009 – 2013)

Reliability score : 7.2/10

The Mazda3 Generation II (BL), introduced in 2009 and facelifted in 2011, builds upon the dynamic success of its predecessor (the BK) while addressing its notorious rust issues. Sharing the Ford C1 platform with the Ford Focus Mk2 and Volvo S40/V50, it offers class-leading handling and steering feel. However, this generation presents a stark 'Dr. Jekyll and Mr. Hyde' reliability profile: while its naturally aspirated petrol engines are virtually bulletproof, the diesel variants (which are the focus of this review) require meticulous maintenance and suffer from well-documented, potentially catastrophic flaws. The 1.6 MZ-CD is sourced from the PSA/Ford joint venture (1.6 HDi/TDCi), while the 2.2 MZR-CD is an in-house Mazda design. Both demand strict usage conditions (long highway trips) to a

✅ Strengths

Class-leading chassis dynamics and steering feedback
Exceptional reliability of naturally aspirated petrol engines
Ergonomic and driver-focused interior
Generous standard equipment levels (especially in Sport/MPS trims)
Significantly improved rust protection compared to the previous generation (BK)

⚠️ Weaknesses

Disastrous reliability record for early diesels (1.6 16v and 2.2 MZR-CD) if poorly maintained
High levels of road and wind noise at highway speeds
Interior plastics are hard and prone to scratching
Firm ride quality, especially on 17-inch or 18-inch wheels
Limited rear legroom and average boot space for the segment

🎯 Verdict

The Mazda3 (BL) is a fantastic driver's car, but your buying decision must be strictly dictated by the engine under the hood. If you are looking at a petrol model (1.6, 2.0, 2.5), it is a resounding 'BUY'—they are among the most reliable cars in their class. However, since your focus is on the diesel variants, the verdict is 'NEGOTIATE' with extreme prejudice, or 'AVOID' if you don't know what you're doing. The 1.6 MZ-CD (109hp) is a ticking time bomb for turbo failure if injector seals aren't monitored. The 2.2 MZR-CD is plagued by timing chain stretch and fatal oil starvation from blocked strainers. If you must buy a diesel, seek out a post-2011 1.6 MZ-CD (115hp 8v) with a perfect service history, and ensure your driving profile consists almost entirely of highway miles to keep the DPF clear.