General & Mechanical Repair
From engines and belts to fluids and check-engine lights, our technicians diagnose the problem and fix it right the first time — no unnecessary work, no surprises on your bill.
From brakes and diagnostics to collision and paintless dent repair, J & M Auto Repair takes care of your vehicle like it's our own. Free estimates, insurance claims welcome, and service in English and Spanish.
One shop for mechanical repairs, collision work, and dent removal — so you don't have to drive all over the Merrimack Valley to get your car taken care of.
From engines and belts to fluids and check-engine lights, our technicians diagnose the problem and fix it right the first time — no unnecessary work, no surprises on your bill.
Squeaking, grinding, or a soft pedal? We inspect pads, rotors, and lines and get your brakes back to safe, quiet, dependable stopping power.
A warning light doesn't have to mean a big repair. Our computer diagnostics pinpoint the real issue so you only pay to fix what's actually wrong.
Blowing warm? We test, recharge, and repair your air conditioning so you stay comfortable through every New England summer.
New tires, rotations, and precision wheel alignment to keep your car driving straight, riding smooth, and wearing evenly.
Oil changes, fluids, filters, belts, and scheduled service to keep your vehicle reliable and catch small problems before they get expensive.
After a collision, we handle everything from frame and panel work to color-matched refinishing — and we work with all insurance companies to make your claim easy. In Massachusetts, the choice of repair shop is yours, and we're glad to deal directly with your insurer.
Before
After
Door dings, hail damage, and minor creases removed without repainting — protecting your factory finish, saving you money, and often done the same day. It's one of the things we're known for, and it's rare to find it done in-house, locally, and in Spanish.
Before
After
We built J & M on doing good work at a fair price and treating people the way we'd want to be treated.
We explain what your car needs in plain language and give you a written estimate before we start. No unnecessary work, no surprises.
We serve our Lawrence community in English and Spanish, so you always understand exactly what's happening with your vehicle.
Mechanical, collision, and dent repair in one place — you don't have to bounce between a mechanic and a body shop.
We work with all insurance companies and can deal with your carrier directly to take the hassle off your plate.
We stand behind our repairs. If something isn't right, we make it right.
Come in for a free, no-pressure estimate before you decide anything.
This is the kind of work we do every day — real before-and-after photos from our own shop are on the way. Want to see examples now? Give us a call.






J & M Auto Repair is a locally owned shop right here in Lawrence. We opened our doors to give our neighbors a place they can count on for honest work — whether that's a routine repair, fixing up your car after an accident, or making a dent disappear.
We treat every vehicle like it's our own and every customer like a neighbor. When you bring your car to us, you'll always know what it needs, what it costs, and that the job was done right.
Did we take good care of your car? We'd be grateful if you shared your experience on Google — it helps other neighbors find us.
| Monday – Friday | 8:00 AM – 6:00 PM |
| Saturday | 8:00 AM – 2:00 PM |
| Sunday | Closed |
Tell us what your vehicle needs and we'll get right back to you. Prefer to talk now? Call or message us — we're happy to help in English or Spanish.
Whatever your car needs under the hood, we handle it in-house — from a strange noise to a major engine repair. You get a clear explanation of what's wrong, a written price before we start, and work that's done right the first time.
Walk-ins are welcome, but calling ahead helps us get your car on the lift faster.
Yes — domestic, Asian, and European vehicles alike.
Most mechanical repairs are done the same or next day, and we give you a time frame with your estimate.
Your brakes are your car's most important safety system. We inspect the whole system — not just the pads — and only replace what's actually worn, so you stop safely without paying for parts you don't need.
Squealing, grinding, a soft or pulsing pedal, pulling to one side, or longer stopping distances — any of these means come see us.
Yes. If your pads still have life or only one axle needs work, that's exactly what we'll tell you.
Most brake jobs are finished the same day — often while you wait.
A warning light is a message, not a mystery. We use professional scan tools to read what your car is saying, then test the actual components — so you fix the real problem instead of guessing with expensive parts.
A steady light means have it checked soon; a flashing light means stop driving and call us — it can damage your engine.
The code points us to a system; we then test the parts in that system so you never replace something that wasn't broken.
Ask us — we'll tell you exactly what the diagnostic costs before we start, and it's applied toward the repair when you fix it with us.
Blowing warm air is almost never "just needs a recharge" — there's usually a small leak behind it. We test the whole system, find the real cause, and get cold air back for good, not just for a few weeks.
Usually low refrigerant from a slow leak — but it can also be the compressor, a fan, or an electrical issue. The test tells us quickly.
No — A/C is a sealed system. If it needs refrigerant every season, there's a leak worth fixing.
Yes — heater cores, blend doors, and blowers, so you're covered for New England winters as well.
Tires are where your car meets the road. We sell and install all major brands, fix flats, and align your wheels precisely — so your car drives straight, rides smooth, and your tires last as long as they should.
The car pulls to one side, the steering wheel sits off-center, or your tires wear unevenly on one edge.
If the damage is in the repairable zone, yes — we'd rather fix your tire than sell you one you don't need.
About every 5,000–6,000 miles — an easy habit is every other oil change.
Cheap insurance for your car: regular maintenance catches small problems while they're still small. We follow your vehicle's factory schedule — not an upsell list — and keep records so your warranty and resale value stay protected.
No — maintenance at an independent shop keeps your warranty valid as long as the schedule is followed and documented. We keep those records for you.
It depends on your engine and oil type — we set the right interval for your car and put a reminder sticker on the windshield.
Brakes, tires, fluids, belts, hoses, battery, and lights — a quick health report with every service, at no charge.