The mark 6 Mini is introduced in 1991. It is re-engineered for a revised SPi engine and a closed-loop cat. Neon LE introduced. Cooper gets a 63bhp SPi version of the 1275 engine with a closed-loop cat and ECU, plus standard spots and stripes. Lamm Cabriolet LE (production: 75) launched by Rover - First official Mini with 13 inch wheels.

In 1992, City and 998cc are replaced by the Sprite. It and the Mayfair get a new 50bhp carb-plus-cat version of the 1275cc engine. British Open Classic LE introduced, the first production Mini with an electric folding sunroof. Italian Job LEs introduced (red, white, blue and green). John Cooper Garages Si conversions becomes a dealer option. Security improvements include alarm/immobiliser option and an internal bonnet release.

In 1993, Cabriolet re-introduced with SPi Cooper engine and 12 inch wheels instead of the Lamm's 13s. Rio (production: 750) and Tahiti (production: 500) LE's are introduced. Cooper gets a standard alarm and a wooden dash option. Mayfair gets the latter standard. Mini production is down to under 21,000.

In 1994, the purchase which will mean the end of the Mini as we know it, BMW buys Rover Group. Cooper Monte Carlo LE introduced (production: 200) to mark 30th anniversary of first Monte win. To mark the event various arms of Rover enter three 'works Cooper SPi group A cars on the Monte. Paddy Hopkirk and Ron Crellin pilot L33 EJB to 52nd overall, fourth in class. 35 LE is introduced (production: 1,000). Mini's 35th birthday party draws 120,000 to Silverstone. Cooper Grand Prix LE is introduced (production: 35).

In 1995, BMW approves the E50 project and begins work on developing a Mini replacement. Sidewalk LE is introduced (1,000). The Mini is voted 'car of the century' by readers of Autocar magazine. Monaco half-leather trim and wooden dash now standard on Cooper.

In 1996, The mark 7 Mini is introduced.