Independent Motors:tire Repair Shop
“Very pleasant and professional, did good work on my 4runner with realistic time estimates and walked me through the whole process.”
Best Engine Repair & Rebuild in Boulder, CO
24 technicians listed · 17 in Boulder · 23 rated 4.5+
Data verified October 16, 2026
Swedish Motors Inc.
“Brad who is an amazing mechanic runs the back, and he is totally knowledgeable, fair and honest.”
The Auto Repair Place
“I am most impressed that they listened to what I had to say and trusted the fact that I knew something was not right.”
J & S Automotive
“I've never written a review for an automotive repair shop, but I have only positive things to say about J & S Automotive.”
Repair Masters Automotive LLC
“I highly recommend this shop to everyone I come into contact with.”
DLS Tire Centers
“Great, down to earth shop, hard to find these days especially in boulder.”
Listed for drivers in and around Boulder, CO, these 24 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: Boulder, CO
17 of the 24 technicians we list are based in Boulder; the other 7 serve Boulder from towns including Broomfield (12 mi), Lafayette (8 mi) and Arvada (14 mi). The technicians on this page are rated from 4.3 to 5.0 across 4,705 reviews; 20 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (98%), quality (88%) and value (77%). The topics that come up most in reviews of the technicians on this page are "diagnosis", "honest" and "fair". The services the technicians on this page list most often on their websites are oil change (5), brake services (3), diagnostics (3), transmission service (3) and wheel alignment (3). 7 list staff certifications (ASE) and 14 have a BBB rating of A or A+. 20 have ten or more years of experience, the longest 67 years. 8 offer financing; 1 gives free estimates; 12 are family- or locally-owned and 13 list coupons or special offers. 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.
Do engine shops listed for Boulder let me spread the cost?
8 of the 24 shops on this page state that they offer financing. An engine is the repair people borrow for, so compare what the credit costs against what a different car would cost you, and get the repair quote in writing first.
John's Auto Care
“Everyone is friendly, thorough inspections, very fair pricing, and quick return of vehicle.”
Alpha & Omega Independent Car Repair
“They are incredibly knowledgeable here and make you feel like you're being taken care of in very good hands.”
Boulder Valley Automotive Repair Shop
“The pricing was more than fair, and I will definitely be taking my car here in the future for maintenance!”
Ridgeline Automotive
“Just bought my new to me truck from the guys at Ridgeline.”
Coyote Motors
“He understands that some owners of older vehicles and limited budgets may need to consider what is a priority to fix now, and what should just be monitored.”
HTC Automotive Repair
“I work 10 minutes down the road and they are happy to shuttle me there when I drop my car off, they've always been honest with pricing and helping where they can, and work is done fast too.”
Russell Auto Service
“I have been coming to Russells for over 15 years and they have always taken very good care of me and my family.”
Pellman's Automotive Repair Shop Boulder
“They are outstanding in their care of my cars as well as showing extraordinary hospitality.”
Stan's Automotive
“Stan's did a comprehensive workup on our vehicle and we set up a priority plan to get everything back in order.”
Glenwood Automotive
“This place is perfect , they are very honest and the price is reasonable.”
Twin Motors
“Jean has repaired a few of my vehicles and I can't be more grateful for his work.”
Boost'd Scoops Motorsports
“I've been taking my modified WRX here for years, Briant has always been extremely helpful regardless of the issues I'm having with the car.”
Onsight Mechanic LLC Mobile Mechanic
“He really cares about his customers and goes the extra mile to make sure the job gets done.”
Foreign Auto Specialist
“I went in for an appointment that needed a quick turnaround and they were able to get me in right away.”
Arvada Automotive Center
“Very friendly, professional, and knowledgeable staff”
Accountable Auto Care
“Hard to find repair shops to trust and Accountable is great to have on my shortlist when I need repairs and don't want to worry that I'm getting a fast one pulled on me.”
Salta Service & Performance
“Friendly, knowledgeable staff that does great work for a fair price.”
Fine Tuned Auto
“If you're looking for a mechanic that you can trust to tell it to you straight about your car, be efficient, polite, and have your car ready as quickly as possible, this is the place.”
Why these companies made our list
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