MINI Mini II (R56) (2006 – 2013)

Reliability score : 4.8/10

The second-generation MINI Hatch (R56) was introduced in late 2006, bringing a slightly larger footprint, improved interior quality, and an entirely new engine lineup to replace the aging Chrysler/Rover Tritec units. While it retained the iconic go-kart handling and retro-chic styling of its predecessor, the R56 is infamous for its patchy engine reliability. The diesel lineup is particularly interesting as it is split into two distinct eras. From 2007 to mid-2010, MINI used the PSA/Ford-developed 1.6L diesel (DV6/W16). Following the 2010 LCI (Life Cycle Impulse / facelift), MINI switched to BMW's own N47 engine family, introducing a 1.6L version and a punchy 2.0L for the Cooper SD. Both diesel families offer excellent fuel economy but come with significant, well-documented reliability cave

✅ Strengths

Outstanding 'go-kart' handling and steering feel
Timeless retro-modern exterior and interior design
Exceptional fuel economy on all diesel variants (often exceeding 60 mpg UK / 4.5 L/100km)
Cooper SD offers a brilliant blend of hot-hatch performance and diesel economy
Strong residual values and massive enthusiast community

⚠️ Weaknesses

Severe engine reliability issues across both early diesels (PSA) and late diesels (BMW)
Timing chain replacement on N47 diesels is prohibitively expensive due to rear-engine placement
Harsh ride quality, especially on models equipped with run-flat tires and sports suspension
Cramped rear seats and very small boot space (160 liters)
Interior build quality issues (rattles, squeaks, peeling trim)

🎯 Verdict

Buying a diesel MINI R56 requires walking through a mechanical minefield. The early PSA-sourced 1.6D (2007-2010) is cheap to run but plagued by turbo-killing oil starvation and injector seal leaks. The later BMW-sourced N47 diesels (2010-2013) are much more refined and the Cooper SD is genuinely fast, but the looming threat of a £1,500/€2,000 timing chain replacement makes them a risky proposition. Verdict: If you must buy a diesel R56, the post-2010 Cooper SD is the best to drive, but you must buy one that has already had its timing chain replaced with documented proof. Otherwise, a late-model petrol Cooper (N16) or Cooper S (N18) is a safer, albeit thirstier, bet. Avoid the N14 petrol (2006-2010 Cooper S) at all costs.