MINI Cabrio II (R57) (2008 – 2015)

Reliability score : 5.8/10

The second-generation MINI Cabriolet (codename R57) succeeds the R52, adopting the R56 sedan's platform. It stands out with the integration of active roll-over bars (invisible when retracted), a soft top that opens in 15 seconds (with a sunroof function), and the introduction of the 'Always Open Timer' gadget. Positioning & Evolution: Initially launched with 'Prince' petrol engines (co-developed with PSA), the R57 received a facelift (LCI) in summer 2010. It was at this point that it introduced, for the first time on the convertible, diesel engines (Cooper D, then Cooper SD in 2011), equipped with BMW engines from the N47 family. Expert's overall rating: Although very endearing, dynamic, and fuel-efficient in its diesel versions, the R57 suffers from capricious mechanical reliability. The

✅ Strengths

Exceptional driving pleasure (karting feel preserved despite the extra weight)
Extremely low fuel consumption on diesel versions (Cooper D and SD)
Abundant torque from the Cooper SD (305 Nm) ideal for acceleration
Improved finish quality compared to the R52 generation
Very versatile soft top with sunroof function (up to 120 km/h)

⚠️ Weaknesses

Disastrous reliability of N47 (Diesel) and N14 (Petrol) engines if poorly maintained
Agricultural noise of diesel engines, not in keeping with the convertible spirit
Almost zero rear visibility with the soft top closed and very poor with the soft top open (folded like an accordion)
Ridiculous boot volume (125 to 170 liters) and difficult access
Very firm suspension, spartan comfort on degraded roads

🎯 Verdict

Buying a MINI Cabriolet R57 with a diesel engine (Cooper D or SD) is a purely rational choice for those who drive a lot, but it somewhat contradicts the hedonistic philosophy of a convertible (rough sound, vibrations). The expert's verdict: If you opt for a diesel, caution is advised. The BMW N47 engine is notoriously famous for its timing chain failures. Never buy this model without a complete service history and, ideally, an invoice proving that the timing chain kit has already been replaced with the reinforced version. If you drive less than 15,000 km/year, prefer a petrol version (Cooper 122 hp or Cooper S N18 post-2010), which is much more suited to the model's spirit.

Common issues

Défaillance du turbocompresseur (moteur 1.6 HDi/DV6) High

🔧 100 000 – 180 000 km

💶 1 200 – 2 000 €

Respecter scrupuleusement les intervalles de vidange et la qualité d'huile.

Encrassement de la vanne EGR Medium

🔧 80 000 – 150 000 km

💶 300 – 700 €

Privilégier les trajets longs et réguliers, envisager un nettoyage préventif.

Problèmes de mécanisme de toit décapotable High

🔧 80 000 – 150 000 km (ou lié à l'âge)

💶 800 – 2 500 €

Tester le fonctionnement complet du toit plusieurs fois avant l'achat.

Usure prématurée des silentblocs et rotules de suspension Medium

🔧 60 000 – 120 000 km

💶 300 – 800 €

Vérifier l'absence de bruits anormaux ou de jeu dans la direction.

Usure du volant moteur bi-masse et de l'embrayage High

🔧 120 000 – 200 000 km

💶 1 200 – 2 200 €

Tester l'embrayage et écouter les bruits anormaux au ralenti (cliquetis).

Estimated maintenance costs

Oil change	£90 – 160
Timing belt	£650 – 1 200
Clutch	£900 – 1 700
Complete brakes	£300 – 600
Estimated annual budget	£700 – 1 300

Indicative estimates (independent garage, UK market). Prices vary by region and year.