About Cromptons Automotive Ltd

We are a long-established independent Mini and BMW specialist based in Bolton, Lancs, with full dealer level diagnostics for the following vehicles:


We offer a full range of services including diagnostics, full servicing, clutches, gearbox repairs and recon for both automatic and manual transmissions, auto electrical faults, ABS faults and pump repairs, brakes, exhausts, starting and charging faults, ECU remaping and ECU repairs.

  • We also have main dealer computers for all makes and models
  • We are also a fully qualified auto electricians and auto locksmiths.
  • We service to a high standard with mini-valet and pick up and drop off service, every
  • car is fully inspected before it leaves the garage. We also do MOTís.
  • We believe in good customer service, no car is worked on without the authorisation of the customer.
  • All our technicians are highly experienced in BMWs and fully qualified