Performance Unlimited
“Being in business myself, I expect more and these boys delivered nothing but excellence.”
Best Engine Repair & Rebuild in London, ON
22 technicians listed · all 22 in London · 3 open 24/7 · 11 open weekends · 14 rated 4.5+
Data verified October 16, 2026
Ricky Ratchets Auto Repair
“I was offered a ride home and my car was returned to my home.”
ND Truck & Trailer Repairs
“If any guy face problem in truck & trailer no doubt dhillon is a perfect mechanic to repair it.”
Kar Doctor AKA KD Automotive Inc
“They fit me in for an appointment right away and they were very kind!”
Hi-Tech Auto Care
“Great place to do business with and thanks again to all the staff”
M RIK Automotive Werks LTD
“They explained the whole process and it was fair pricing and especially thanks Jolly.”
Listed for drivers in and around London, ON, these 22 shops repair, rebuild and replace engines. What each one says about machine work, warranty terms and the engines it supplies comes from its own website; ratings and quotes come from public reviews.
Area overview: London, ON
All 22 technicians we list here are in London itself. We have 24 technicians in London on file; this page shows the highest-rated 22. The technicians on this page are rated from 3.9 to 5.0 across 1,217 reviews; 8 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (96%), value (80%) and quality (76%). 3 are open around the clock; 11 are open on Saturdays and 3 on Sundays. 2 show a licence on their websites. 9 have ten or more years of experience, the longest 30 years. 3 offer emergency or roadside call-outs; 1 offers financing; 1 gives free estimates; 2 are family- or locally-owned and 3 list coupons or special offers. We have a website on file for 14 of the technicians on this page; 12 publish a contact page and 8 list a public email. We count these figures across the technicians on this page; hours and prices change, so confirm the details with the technician before you visit.
Which shops listed for London say they are licensed?
2 of the 22 shops show a licence on their websites. For engine work, ask something more specific as well: which machine shop they use, and how many of your engine family they have built.
Bs&b Radiator
“My car was having some major issues that needed immediate service and I took it there and they were excellent at quickly diagnosing the problem and properly fixing it the same day for way less than the dealership would have.”
London Custom Truck & Car Repair Inc
“Highly knowledgeable group of guys in the back, would highly recommend to anyone.”
BJ Truck and Trailer Services
“Experienced technician reached on-site and fixed my vehicle promptly at a very reasonable rate.”
Allewell Truck and Trailer
“Amazing service had me back on the road in two hours for a water pump replacement.”
London Drive Systems
“I'd heard of problems doing these & they did a great job, price as quoted, delivered sooner than promised, car now rides excellent.”
Sams Auto Service
“Great place, an honest owner who doesn't try and rip people off and only fixes what is broken.”
Mitryk Services
“They always take care of my heavy duty needs weather it's the work truck or the motorhome”
G & C Auto Repair Inc
“This Auto Repair Shop is honest and does only the work that needs to be done.”
A-1 Truck & Trailer Repair
Fleet Master Tank & Trailer Inc.
“Friendly family oriented business, experienced in repairing large trucks , some Motor-coaches too, but most of all their specialty is repairing and certifying gasoline tankers , they hold a specialized licence from the government to certify the tankers and keep them rolling down the road to provide us with gas at the pumps , also they are quite innovative at building and renewing almost anything to do with a trucks .”
Fleet Auto
“It's very good place for repair your car and have painting there in good price”
Front Ta-Back Motors
“He had it diagnosed and put a plan in place within 10 minutes, then even drove me home while he worked on it.”
Blueking Truck and Trailer Repairs Inc.
“Absolutely the best group of guys who actually know what they are doing when it comes to trucks...”
London Auto Restoration
“He is the best in the city mazen”
Robby's Truck Trailer Repair &truck Wash
“Good package for oil change+ truck wash including inspection, greasing etc..”
London Truck and Trailer Services
“Good mechanics to help you out.”
Why these companies made our list
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