Expert fault finding and repairs for your vehicle
From our independent workshop in Cornwall, KJ Rule can diagnose and resolve issues with your car or business vehicle with skill and precision.
Getting you back on the road
If you’re having vehicle trouble, KJ Rule are here to put it right. Call on our friendly, independent team to identify the cause, and deliver a high-quality mechanical or electrical repair – whether it’s a routine fix or a more complex challenge.
A suite of services to serve your automotive needs
Thanks to our highly skilled automotive technicians and state-of-the-art technology, we deliver thorough and effective repairs for a wide range of vehicle faults.
Routine repairs
Advanced system repairs
Complex repairs
Why choose KJ Rule for diagnosis and repair
Whatever you need for your personal car or business vehicle, you’re in safe hands. As an independent workshop, we’ve built a reputation for providing an honest, approachable service and first-rate work.
Expect excellence every time – thanks to our use of industry-leading diagnostic tools and talented automotive specialists.
In every diagnosis and repair job we undertake, we’re open and transparent about the challenge, always giving you the information you need.
Precision and quality are everything to us – so you have the peace of mind that our repair will deliver safety, performance and reliability.
Frequently asked questions
We’re always happy to answer your specific enquiries – but you might find these answers to popular queries helpful.
Do I need to book or can I just drop in?
What does the vehicle diagnostic process and repair involve?
What kind of vehicles do you work on?
What is ADAS calibration and why is it important?
What does a strip and refit involve?
Contact our team today
We’re always happy to answer your specific enquiries – but you might find these answers to popular queries helpful.
"A family run business with an ethos of both customer service and satisfaction in their ability to provide excellent repairs. The repairs made to my car are totally invisible, the blending perfect."
“many thanks for the repair work carried out to your usual high standards. please pass on my thanks to all concerned for the excellent service.”
"Exceptional service, very helpful, efficient and professional. I did not recognise my van when I picked it up. It looked brand new!"
“Just a quick note to say thank you for the superb repair on my ST. Its now just as good as new again and the car was returned in a spotless condition. Its so nice to see wonderful standards of work still can be achieved by real craftsmen.”
"These guys are really professional, friendly and get on and complete the work to very high standards. This was an insurance job, the insurers organised a company from Columpton , they advised me 4- 8 weeks to complete the work! These guys did the work in 1 week."
"I visited KJ Rule today to see whether they could assist with some bramble scratches on my car and I was absolutely delighted with the professional service that I received."
"Great experience having our new Mercedes bodywork done (hit by a Bus whilst stationary) Mercedes themselves recommend them which says everything. If you want the best look no further!"
"It is only when things don’t go to plan that the best service providers stand out and rise above the rest. The team kept us informed throughout the repair. We would recommend them without reserve!"
"Couldn't fault the service and great job they did. The team in the office were very friendly and helpfully."
"I cannot thank them enough for all their efforts in getting my car repaired to the correct standard. If you need any cosmetic work done on your car do not look any further than KJ Rule!"
"Thank you and your team for your excellent service in respect to the repair of my car, it is like new. Will certainly recommend your company. "