Engine Repair Shops in London, ON

Find trusted engine repair services in London. Compare prices, read reviews, and book online.

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MRIK AUTOMOTIVE WERKS LTD
London • ≈ 8 km
MR
241 Horton St E, London, ON N6B 1L1, Canada, London
★ 5.0
749 Google reviews
Response ≈ 18 min $$$ • Quotes free
Engine Repair Auto MechanicTransmission
📞 (647) 708-1300 Free quote • Verified
CAR FIX PRO
London • ≈ 8 km
CA
94 Clarke Rd, London, ON N5V 3B1, Canada, London
★ 4.9
49 Google reviews
Response ≈ 36 min $$$ • Quotes free
Engine Repair Auto Mechanic
📞 (705) 918-1751 Free quote • Verified
London Top Gear auto repair
London • ≈ 6 km
LO
1682 Gore Rd, London, ON N5W 5L5, Canada, London
★ 4.9
129 Google reviews
Response ≈ 38 min $ • Quotes free
Engine Repair
📞 (226) 506-3814 Free quote • Verified
Master Mechanic London
London • ≈ 6 km
MA
1062 Oxford St E, London, ON N5Y 3L3, Canada, London
★ 4.9
298 Google reviews
Response ≈ 58 min $$$ • Quotes free
Engine Repair Auto MechanicToyota Repair
📞 (519) 914-3132 Free quote • Verified
QUICK FIX AUTO
London • ≈ 6 km
QU
624 Third St Unit B, London, ON N5V 2C2, Canada, London
★ 4.9
254 Google reviews
Response ≈ 35 min $$ • Quotes free
Engine Repair
📞 (519) 697-8335 Free quote • Verified
Wortley Auto Service
London • ≈ 3 km
WO
12 Wortley Rd, London, ON N6C 5K2, Canada, London
★ 4.9
499 Google reviews
Response ≈ 48 min $$ • Quotes free
Engine Repair Auto Mechanic
📞 (519) 642-3819 Free quote • Verified
Amin Auto Repair
London • ≈ 2 km
AM
120 Falcon St, London, ON N5W 4Z1, Canada, London
★ 4.8
87 Google reviews
Response ≈ 33 min $ • Quotes free
Engine Repair Auto MechanicFuel System
📞 (226) 998-0003 Free quote • Verified
Automotive Solutions & Tires
London • ≈ 7 km
AU
818 Cabell St, London, ON N5Z 1P7, Canada, London
★ 4.7
566 Google reviews
Response ≈ 31 min $$$ • Quotes free
Engine Repair Auto MechanicBrake Services
📞 (519) 660-6627 Free quote • Verified
C-MAC AUTOMOTIVE REPAIR SOLUTIONS INC.
London • ≈ 6 km
C-
517 McCormick Blvd Unit 1, London, ON N5W 4C8, Canada, London
★ 4.7
93 Google reviews
Response ≈ 25 min $$$ • Quotes free
Engine Repair Toyota RepairVehicle Inspection
📞 (519) 859-7276 Free quote • Verified
Summerside Mobile Auto Repair
London • ≈ 9 km
SU
1165 Darnley Blvd, London, ON N6M 0B7, Canada, London
★ 4.7
47 Google reviews
Response ≈ 16 min $ • Quotes free
Engine Repair Auto ElectricalBMW Repair
📞 (226) 783-1897 Free quote • Verified
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London customer reviews

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Verified Reviews for Engine Repair
★ ★ ★ ★ ★

“We're an artificial grass company from Vaughan doing a big project here in London.

We noticed one of our work trucks needed an immediate headlight fix, and we called around to see who could take us in on short notice.

Lovedeep was helpful on the phone, promised a quick turn-around, and then delivered at the shop.

He really took care of us and we appreciate it.

Pictures of some of our recent work”

Fieldmasters Synthetic Grass • Engine Repair at CAR FIX PRO, London
★ ★ ★ ★ ★

“very good to work with very professional. Making sure not to over charge and only do what is needed”

Joel Bouchard • Engine Repair at Automotive Solutions & Tires, London
★ ★ ★ ★

“The great thing is you font need an appointment, and normally u dont need to wait more. Nice work, except some pricing/billing glitches. I paid 69$ each for engine filter and the cabin filter, where as the price for the filter was less. They told its the system adjustment, still i dont get that. Might be the labour but its not showing as labour charge. Rest all was good”

Anish P Elias • Engine Repair at Master Mechanic London, London
★ ★ ★ ★ ★

“Awesome service really reliable had a issue we my brakes came right away and inspected it then came the next day to service it. Would highly recommend 👌”

Aaron Tang • Engine Repair at Summerside Mobile Auto Repair, London
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Find a Best Engine Repair in London, ON

Boommar lists 10 verified mechanics in London. Compare real reviews, response times, pricing bands, and open bays — then book online.

Common Causes of Auto Engine Problems

Neglected oil changes causing internal sludge buildup and bearing wear
Overheating due to coolant leaks, failed thermostats, or water pump failure
Worn or fouled spark plugs causing misfires and poor combustion
Timing belt or chain failure leading to catastrophic valve damage
Carbon buildup on intake valves reducing airflow and performance
Failing head gaskets allowing coolant and oil to mix internally

Critical Signs Your Auto Engine Needs Repair

Check Engine light is on or flashing on the dashboard
Engine is knocking, pinging, or making metallic rattling sounds
Significant loss of power during acceleration or climbing hills
Excessive white, blue, or black smoke from the exhaust tailpipe
Visible oil or coolant leaks pooling under the vehicle
Engine is overheating or the temperature gauge reads in the red zone

Engine Repair Services Available

Engine Diagnostics

OBD-II scanning and advanced live data analysis

Engine Tune-Up

Spark plugs, ignition coils, filters, and sensor replacements

Head Gasket Replacement

Resealing the engine block to cylinder head joint

Timing Belt/Chain Service

Preventive replacement before catastrophic failure

Engine Rebuild

Complete disassembly, machining, and reassembly with new internals

Engine Replacement

Installing a remanufactured or used replacement engine

Engine Repair Tips

Never ignore a flashing Check Engine light—it indicates active damage to the catalytic converter or engine internals
Follow the manufacturer's timing belt replacement interval exactly (usually 100,000 to 160,000 km)
Use the correct grade of engine oil specified in your owner's manual
Monitor your temperature gauge regularly, especially in heavy summer traffic
Address small oil leaks before they become major engine failures
Get a compression test done if your engine has over 200,000 km to assess internal wear

Frequently Asked Questions

How much does engine repair cost in London? +
Minor repairs like spark plugs or sensors cost $150-$500. Head gasket replacement runs $1,500-$3,000. A complete engine rebuild costs $3,000-$6,000+, while a replacement engine with installation ranges from $4,000-$8,000+.
Is it worth rebuilding an engine vs. replacing it? +
If the block and heads are in good condition, a rebuild is often more cost-effective and can result in a like-new engine. If there's severe damage (cracked block, spun bearings), a remanufactured replacement may be more practical.
How long does an engine rebuild take? +
A complete engine rebuild typically takes 2 to 4 weeks, depending on parts availability, machining requirements, and the shop's workload.
What causes a head gasket to fail? +
The most common cause is engine overheating. When the engine exceeds its designed temperature, the head gasket material warps and fails, allowing coolant and oil to mix or leak externally.