Dr. Auto Repair
“We were passing through when we had major car trouble and he was able to obtain the part within hours and worked tirelessly to get our pickup repaired!”
Best Engine Repair & Rebuild in Billings, MT
16 technicians listed · 14 in Billings · 2 open weekends · 14 rated 4.5+ · 1 shows a license
Data verified October 16, 2026
The Brake Shop & Auto Repair
“The service is predictably good at every request for repairs or diagnostic to troubleshoot any problems I've had on many different manufacturers vehicles I've owned.”
Chung Brothers Automotive
“So many mechanics try to get you to spend and much as possible; but these guys look out for the average folks, and at a fair rate with excellent service.”
Wild West Diesel Repair Inc
“I called from weigh station, Brandon came out right away, changed a few brake pads and had me on my way very quickly, super nice people all around and very reasonable on price.”
G & J Diesel Sales and Service
“Price was a little higher than i wanted to pay, but between their reputation and the fact that diesel is what they do, not a sideline, it'll be worth it if there's no hiccups when hunting.”
Castro Cepak Motorsports Diesel & Auto Repair
“Colin and the crew and Castro Cepak do outstanding work at fair prices - a breath of fresh air these days when it seems like everyone is trying to gouge you.”
Listed for drivers in and around Billings, MT, these 16 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: Billings, MT
14 of the 16 technicians we list are based in Billings; the other 2 serve Billings from Laurel (13 mi) and Bridger (38 mi). The technicians on this page are rated from 4.0 to 5.0 across 837 reviews; 5 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the technicians on this page are "price", "fair" and "honest". 2 are open on Saturdays. 1 shows a license on its website; 3 list staff certifications (ASE) and 1 has a BBB rating of A or A+. 6 have ten or more years of experience, the longest 37 years. 2 give free estimates; 1 is family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 12 of the technicians on this page; 9 publish a contact page; 4 list a public email and 2 take bookings online. We count these figures across the technicians on this page; distances are straight-line, and hours and prices change, so confirm the details with the technician before you visit.
Why do some listings show another city?
14 of the 16 shops are in Billings itself and the rest come from other towns within 40 mi. An engine job means leaving the car for days, so the drive happens once at each end rather than every morning.
Diesel Xtreme
“I took my truck here and they gave me a reasonable quote and performed the job of replacing my radiator and fan that same afternoon so we could keep traveling.”
Pro Tech Automotive & Diesel
“I live 400 miles from Pro Tech Automotive if I ever have any other diesel problems I'll have no problems driving here to get done right, thank you all.”
Cel Automotive & Diesel Repair
“He's been very willing to trouble shoot some issues with my old 2nd Gen Cummins and I never worry about being taken for a ride and charged for non-sense.”
Kw Mechanical Services
“Very professional and takes their work seriously, has pride in they're finished work, I would highly recommend this outfit, fast response time in and out same day had a total rear end replaced thanks again Carl and the boys”
Summit Garage
“I have taken my truck there multiple times and a company truck a handful of times and each time the prices were unbeatable and the work was done quickly and professionally.”
The Diesel Schopp & Auto Repair LLC
“Nate is very knowledgeable and fair!”
Higgins Diesel Truck Repair
“Best gear man in the business.”
Royalty Diesel LLC
Riverside Auto & Truck Repair
“The shop is very good two have here he is some times booked out week at a time but he is worth it it in the long run here that's y I have ben going to him for 12 yes sence I moved up here two Laurel Montana”
Q's Quality Auto Repair
“The original shop saw the photos of an overtorqued pinion nut and claimed fault agreeing to pay for the work Q's has completed to get me back on the road.”
Why these companies made our list
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