MINI MINI Cabriolet F57

The MINI Cabriolet F57 (2016–2023) is the open-top version of the F56 — same platform, same engines, with a fully electric soft top that opens in 18 seconds. No hydraulic fluid headaches like the R57: the electric hood mechanism is considerably more reliable. Built in Oxford, 2-door only, no ALL4 available.

Engines: The B38B15 (Cooper, 100 kW) is the three-cylinder turbo — economical, solid, no widespread issues. The B48B20 (Cooper S, 131–141 kW) is more refined and has noticeably more reserve power. No JCW Cabriolet in this generation, no diesel. Both engines carry the same F56 family baggage: plastic oil filter housing cracks from 60k–90k miles ($1,650–4,400), carbon buildup on intake valves from direct injection, and hydraulic engine mounts fail on most cars by 40k miles ($550–1,650). Pre-2018 cars: check for wiring harness water ingress in the scuttle tray.

Convertible-specific issues: The soft top itself is robust, but drain channels block without regular cleaning — water in the footwell follows. Inspect the windscreen seal rubber. Wind noise above 80 mph is noticeably higher than in the F56 hatchback. The open structure is softer than the 3-door — flex on rough roads is palpable, especially on higher-mileage cars.

Test-drive checklist: Cycle the soft top fully open and closed — any edge misalignment on the seal? Cold start listen (motor mount thud). Check window frames for rust creep. Smell the interior for damp (blocked drains). Visual check around the oil filter housing for seepage.

2026 market: Cooper F57 from $15,500. Cooper S from $20,000–28,500. Post-2018 facelift commands a ~$2,200–3,300 premium.

Insider pick: Cooper S (B48B20), 2018–2020, under 40k miles — past the wiring harness concern of early cars, with the more reliable second-series hood drive.