Muldoon's Performance Transmissions
“Thank you to John, George, Jake and the whole crew at Muldoons.”
Best Transmission Repair Shops in New Castle, DE
15 mechanics listed · 11 in New Castle · 1 open 24/7 · 4 open weekends · all 15 rated 4.5+
Data verified October 30, 2026
Cottman Transmission and Total Auto Care
“Not only did he reassure me nothing major needed to be done, but charged me nothing for the 10-15 minutes to drive the vehicle and inspect the undercarriage.”
Dj's Automotive
“Is an outstanding mechanic & person- he won't scam you-he will go that extra mile - give rides somewhere after you drop your car off,etc.”
M&M Automotive
“I've had my cars repaired here several times and each time was smooth, tall Matt and short Matt are knowledgeable, straightforward and thorough.”
First State Fleet Service
“Best place to get ol Betsy spruced up to be a Hot Betty!!!!!”
Anthony's Automotive Towing&recovery
“He dropped me off at a hotel Saturday night, started the repair the next morning, Sunday, earlier than he promised, was extremely patient when things went wrong during the repair (the parts for my car were weirdly hard to find, and a different part broke during repair), and got me on the road after over 9 hours of effort on his part.”
Listed for drivers in and around New Castle, DE, these 15 shops work on transmissions. What each one says about rebuilds, warranty terms and the brands it handles comes from its own website; ratings and quotes come from public reviews.
Area overview: New Castle, DE
Of the 15 mechanics we list here, 11 are in New Castle itself and 4 come from Wilmington (3, 5 mi) and Bear (1, 4 mi). The mechanics on this page are rated from 4.5 to 5.0 across 1,530 reviews; 7 have 50 or more reviews. The topics that come up most in reviews of the mechanics on this page are "price" and "diagnosis". 1 is open around the clock; 4 are open on Saturdays and 1 on Sundays. 2 list staff certifications (ASE) and 7 have a BBB rating of A or A+. Domain records put 6 websites of the mechanics on this page at ten or more years old; the oldest dates from 1996. 1 offers emergency or roadside call-outs; 1 offers financing; 2 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 8 of the mechanics on this page; 4 publish a contact page; 5 list a public email and 2 take bookings online. We count these figures across the mechanics on this page; distances are straight-line, and hours and prices change, so confirm the details with the mechanic before you visit.
Do years in business matter for transmission work?
Ten or more years in business is claimed by 8 of the 15 shops here. Rebuild quality is hands-on skill, and a shop that has been in one place a long time is easier to hold to a warranty. It is what their listings state, not a guarantee.
S & W Auto Repair
“Got that fixed also one new caliper and brakes all around the place is run very professionally work was done guickly as possible I would definitely give the place a ten.”
JRM Auto Service
“He opened his shop on a normally closed day, did repair work in a timely manner and was affordably priced.”
Aarons Auto Services
“He was on his way out, but kind enough to take the time to help us, getting our car into driveable shape and getting us on our way.”
Quality Enterprises LLC
“My family takes our cars and we are always more than satisfied with the work performed and the customer service.”
A&A Auto Services
“Instead of turning us out of towners away or severely over charging us, TJ went above and beyond to accommodate our situation at a MORE THAN FAIR PRICE.”
JV Auto Service
“Knowledgeable and work done in a reasonable timeframe”
Certified Automotive
“They were extremely polite and accommodated me even though I did not have an appointment and they were booked solid!”
Newport Auto Center
“Jeff is very accommodating to any issue I may have and is very reasonable.”
Asap Automotive
“ASAP delivered on their name, and fit me in same day with excellent service 😊”
Why these companies made our list
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