1998 Rover MINI 1.3L Petrol · S133 DDM

The Mini's 1.275 L engine typically delivers around 45 mpg (imperial) in mixed driving, putting fuel costs at roughly £1,200‑£1,400 per year based on current fuel prices. Road tax for a 1998 Mini with 1275 cc falls into the lower band (currently £150‑£170 annually). Insurance groups for this model are usually in the 12‑14 range, translating to about £600‑£800 per year for a standard driver. Routine maintenance on an older Mini can be modest, but corrosion repairs can add £500‑£1,000 annually if the rear structure issues are not addressed.

Overall, a realistic estimate for annual running costs—including fuel, tax, insurance and typical maintenance—is between £2,450 and £2,800.

Focus first on the rear sub‑frame and surrounding structure: the June 2026 MOT flagged dangerous corrosion on both nearside and offside rear vehicle structures, which directly impacts braking and steering safety. Inspect for rust penetration, compromised welds, and any signs of recent repair work.

Check the rear radius arms for excessive play, as noted in the 2018 MOT (excessive play in pins/bearings). Also verify the condition of the rear brake pipes and seat‑belt anchorage points, which have been repeatedly flagged for corrosion since 2018. Finally, examine the wheel bearings – the 2026 MOT advisory mentioned slight play in the nearside front bearing – and assess tyre tread, as several MOTs reported tyres close to the legal limit.