Auto Repair & Diesel Repair in Lindenhurst, NY – All Makes & Models, Trusted Since 1969

Roadside Auto is ASE certified.
Roadside is a stocking dealer for Good Year tires.
Roadside Auto proudly uses Mobil oil.
Roadside Auto is a stocking dealer for Kumho tires.

Bring it to Roadside Auto Repair

We’ve been serving drivers in Lindenhurst, Copaigue, Babylon, and surrounding communities on the South Shore of Long Island since 1969. Our ASE-certified team specializes in a comprehensive range of automotive services for both gas and diesel vehicles, including transmission rebuilds, brake repairs, fuel injection service, wheel alignments, and heating and air conditioning. All makes and models welcome!

We take pride in diagnosing your vehicle accurately, explaining the work involved clearly, and only recommending what’s absolutely necessary. Whether you’re coming in for a tire change or a major engine repair, you’ll always leave knowing exactly what was done and why. Our commitment to transparency and quality is why our customers trust us with their vehicles for years. It’s also why they send their friends and family our way.

Roadside Auto shop facing Montauk Highway, Rt. 27a in Lindenhurst, NY
The counter at Roadside Auto. Bill Colleran, owner.
A van and VW sedan being serviced at Roadside Auto
Busy garage at Roadside Auto. Diagnostics machines and tool boxes.

Services we offer include:

A tune-up is one of the best investments you can make in your vehicle’s long-term health. At Roadside Auto Repair, our tune-up service includes inspecting and replacing spark plugs, checking ignition timing, replacing air and fuel filters, and reviewing belts, hoses, and fluid levels. A properly tuned engine runs cleaner, gets better fuel economy, and is far less likely to leave you stranded. Whether your check engine light is on or you just notice your car isn’t running the way it used to, a tune-up is often the first and most cost-effective place to start.

Your fuel injectors are responsible for delivering the precise amount of fuel your engine needs to run efficiently. Over time, carbon deposits and varnish build up inside the injectors, causing poor fuel atomization, rough idling, sluggish acceleration, and reduced gas mileage. Our fuel injection service cleans and restores your injectors to near-factory performance, improving throttle response, fuel economy, and overall drivability. It’s a service that’s often overlooked but makes a noticeable difference, especially on high-mileage vehicles.

Your transmission is one of the most complex and critical components in your vehicle, and transmission problems rarely fix themselves. At Roadside Auto Repair, we diagnose transmission issues accurately before recommending a course of action. We work on both automatic and manual transmissions across all makes and models, including diesel-powered vehicles. Whether it’s a fluid flush, a repair, a full rebuild, or a replacement, our goal is always to give you the most reliable, cost-effective solution for your specific situation, not just the most expensive one.

A failing heater or a blown A/C isn’t just uncomfortable; in extreme weather, it can be a safety issue. Our HVAC service covers the full climate control system, including refrigerant recharging, compressor inspection and replacement, heater core service, blower motor repair, and leak detection. Whether your car blows warm air in the summer or the defrost isn’t clearing your windshield in winter, our technicians will diagnose the root cause and get your climate control working properly again.

Proper tire mounting and balancing is essential for a smooth ride, even tread wear, and safe handling. At Roadside Auto, we mount and balance all major tire brands, including Kumho and Goodyear, both of which we stock on-site. An unbalanced tire causes vibration in the steering wheel, premature tread wear, and added stress on your suspension components. Whether you’re putting on a new set, switching between seasonal tires, or just noticed a shimmy at highway speeds, we’ll make sure your tires are seated and balanced correctly every time.

If your vehicle pulls to one side, your steering wheel sits off-center, or your tires are wearing unevenly, chances are your alignment is off. Wheel alignment refers to the angle and direction your tires make contact with the road, and even a minor misalignment can cause significant tire wear and compromise your vehicle’s handling. At Roadside Auto Repair, we use precision alignment equipment to bring your wheels back to manufacturer specifications — improving safety, extending tire life, and restoring the straight, stable drive your vehicle was built to deliver.

Your brakes are your vehicle’s most important safety system, and worn or failing brakes demand immediate attention. Our brake service covers everything from brake pad and rotor replacement to caliper repairs, brake fluid flushes, and full brake system inspections. We’ll tell you honestly what needs attention now and what can wait. You’ll never be pressured into repairs you don’t need. Whether you’re hearing a squeak or squeal, feeling a grind, or noticing your stopping distance has increased, bring it in and we’ll get to the bottom of it.

Keeping a fleet on the road means keeping your business running. Roadside offers reliable, efficient fleet maintenance and repair services for businesses of all sizes in the Lindenhurst area. From scheduled preventive maintenance to unexpected repairs, we understand that downtime costs money, so we work efficiently and communicate clearly to get your vehicles back in service as fast as possible. We service both gas and diesel-powered fleet vehicles, including vans, light-duty trucks, and commercial vehicles.

The differential is what allows your wheels to rotate at different speeds when turning — a component most drivers never think about until something goes wrong. Symptoms of a failing differential include whining or grinding noises, vibration, and difficulty handling corners. Left unaddressed, differential problems can lead to complete drivetrain failure. At Roadside Auto, our technicians are experienced in diagnosing and rebuilding differentials on rear-wheel, front-wheel, and all-wheel drive vehicles, restoring proper power distribution and protecting the rest of your drivetrain.

Diesel engines are built to work hard and last long, but they require specialized knowledge and care. Roadside has been servicing diesel-powered cars, trucks, and commercial vehicles since 1969. Our diesel services include fuel system maintenance, injector cleaning, glow plug replacement, turbocharger inspection, exhaust and emissions service, and routine oil and filter changes using diesel-rated fluids. Whether you drive a diesel pickup, a work van, or a commercial vehicle, our team has the expertise to keep it running at peak performance.

A dead battery is one of the most common (and most preventable) causes of a breakdown. We offer fast battery testing to check your battery’s current charge, cold cranking amps, and overall health. If your battery is weak or failing, we’ll replace it on the spot with a quality unit backed by a warranty. We also inspect your alternator and charging system to make sure the new battery stays charged.

When the check engine light comes on, it can mean anything from a loose gas cap to a serious engine issue. Our technicians use professional-grade diagnostic equipment to pull fault codes, interpret what they mean in the context of your specific vehicle, and recommend the right repair. We’ll explain what we find in plain language so you can make an informed decision about next steps.

Regular oil changes are the single most important thing you can do to extend the life of your engine. Roadside services all vehicle types with the right oil grade and filter for your make and model; conventional, synthetic, and diesel-rated. Every oil change we do includes a multi-point inspection covering fluid levels, belts, hoses, tire condition, and lights.

Modern vehicles rely heavily on complex electrical systems, and diagnosing electrical problems requires both advanced equipment and experienced hands. We handle a wide range of electrical repairs including alternator and starter replacement, wiring issues, fuse and relay problems, lighting repairs, and power window and door lock service. If your car is behaving strangely and you can’t pin down why, an electrical inspection is often where the answer lies.

A damaged or deteriorating exhaust system affects your fuel economy, engine performance, cabin air quality, and your ability to pass New York State inspection. We inspect and repair mufflers, pipes, catalytic converters, and oxygen sensors, and can address emissions-related check engine codes to help you pass inspection the first time.

As a trusted local shop, Roadside Auto Repair performs New York State vehicle inspections efficiently and honestly. If your vehicle needs repairs to pass, we’ll tell you exactly what’s required and give you a fair estimate with no surprises and no unnecessary add-ons. Our goal is to get you through inspection and back on the road.

290 W Montauk Hwy, Lindenhurst, NY 11757

Hours of Operation

  • Mon-Fri: 8:00am-5:00pm

  • Sat: 8:00am-3:00pm

  • Sun: CLOSED

We’re a stocking dealer for Kumho and Good Year tires.