Butler Tire Service
“I got my tires changed here, they are fast and have the best prices.”
Best Engine Repair & Rebuild in Frederick, MD
24 technicians listed · 9 in Frederick · 9 open weekends · 21 rated 4.5+
Data verified October 16, 2026
King Farm Auto Service
“We have used King Farm Auto service numerous times and we could not have been more satisfied.”
Brownie's Auto Repair
“I won't take my car anywhere else, probably the most honest fair mechanic I've ever been to”
Milex Complete Auto Care Frederick
“Good, reliable service and done in a very reasonable time while I waited.”
Spectra Auto Services
“They do great work, at fair prices, within promised timing and with customer input and permission to proceed.”
Trending Motorsports Techniques
“The technicians at Trending Motorsports, Brandon, Manuel, Greyson, Max and Junior demonstrated their expertise and proficiency in handling my vehicle, which immediately put my mind at ease.”
Listed for drivers in and around Frederick, MD, 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: Frederick, MD
9 of the 24 technicians we list are based in Frederick; the other 15 serve Frederick from towns including Rockville (28 mi), Walkersville (5 mi) and Ijamsville (6 mi). The technicians on this page are rated from 4.2 to 5.0 across 3,535 reviews; 17 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (97%), quality (85%) and value (72%). The topics that come up most in reviews of the technicians on this page are "diagnosis", "honest" and "communication". 9 are open on Saturdays and 2 on Sundays. The services the technicians on this page list most often on their websites are brake repair (4), diagnostics (3), factory scheduled maintenance (2), oil change (2) and preventative maintenance (2). 7 list staff certifications (ASE) and 8 have a BBB rating of A or A+. 16 have ten or more years of experience, the longest 50 years. 4 offer financing; 1 gives free estimates; 5 are family- or locally-owned and 9 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 Frederick let me spread the cost?
4 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.
Carriage House Automotive
“I called on my lunch break, they squeezed me in, found the problem, and fixed it in a few short hours.”
That Auto Shop
“They have done excellent work installing a new exhaust, downpipes, CAI, as well as exterior mods-caliper covers,front splitter, side skirts, and wing on my car.”
Lisbon Auto Repair Center
“So grateful to have a local auto repair shop where we can trust the mechanics to be well trained and the owner to be honest and fair.”
A Plus Automotive Service Inc
“A Plus has been maintaining all our vehicles for about 15 years.”
Triangle Motors
“When I had questions about the service weeks later Tina and Rachel were again immediately helpful and encouraged me to bring my vehicle in just so they could look it over.”
Rosemont Motors
“They are excellent at spotting small problems before they become huge problems.”
5 Speed Auto Repair
“This is the best auto body repair shop I've ever been to and I cannot say enough great things about these guys.”
K&C Motors
“Great mechanics friendly environment, and has top of the line machines to work on any vehicle.”
Brothers Garage LLP
“Knowledgeable mechanics who are honest and explain things so that someone who doesn't know much about cars can understand what is wrong.”
Mid-Valley Auto & Truck Repair
“He reset all electric components and charged me A VERY FAIR price.”
Tracy's Auto Repair
“I have found that by far this company is honest & fair in pricing and reliability.”
Autostream Car Care Center
“Thank you, we will come back in the future and highly recommended for any car needs!”
Mt. Airy Motors
“As always, Ted, Curt, and the team went above and beyond to make sure my fickle Subaru was back on the road as quickly as possible.”
Mechanics on Wheelz
“Ronnie has come out to where I live to fix/repair things about my vehicle, and does everything on the spot in the parking lot.”
Maryland Motor Werkz
“We were traveling through town on our way home when our van started messing up and Joseph took good care of us.”
OCS Motorsports
“Micah and his wife are a terrific team who provide excellent service!”
Auto Mechanic On Demand
“John is extremely helpful and goes out of the way to help.”
Gardner's Garage
“Gardners garage is a great place to have your vehicle repaired and maintained.”
Why these companies made our list
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