35321 Acacia Ave, Yucaipa Ca 92399               909.790.3000



If you have your car long enough, eventually you will require service.  We understand the value of having a dependable mechanic.  Someone you know, like and trust.  Which is why most of our business is referral based.   It is also why we maintain and excellent rating with the Better Business Bureau.   Our service technicians, will always provide you with a clear explanation of repairs to be done on your vehicle and make recommendations for preventative maintenance.

Whether you drive a GM, Chrysler, Ford, Toyota, Honda or just about any other vehicle make and model, our factory–trained and ASE certified technicians can repair and service your vehicle. When you bring your vehicle in to United Motorsports, we can perform all the manufacturer’s scheduled maintenance services listed in your owner’s manual. You do not have to go to the dealer for these services to maintain your car’s warranty.


Wheel alignment helps your car handle correctly and tires wear evenly. Alignment is essential to safety with your vehicle. Most cars on the road today require a 4 factor alignment that is critically sensitive. At United Motorsports we have the latest technology to give you the best alignment available.

If your vehicle is showing signs of lessened battery life, such as delayed start time, you may need to get your battery replaced. If your battery dies before you replace it, you might be stranded without a vehicle. The expert team at United Motorsports can examine, diagnose and replace your battery as needed. You can trust us to service your battery and, if necessary, help you find and install the perfect new battery for your vehicle.

Does your brakes squeal or grind? Or make jerky stops? Those are warning signs that you need services on your brakes. Your brakes are one of the most critical pieces of your vehicle and contain several and important components that must be installed and maintained correctly. From routine maintenance to a complete brake system we can handle your needs.

Need a rear differentials repair? Our ASE certified technicians can rebuild and repair your rear differentials, so you can get prime performance from your vehicle. Rear differentials transmit power to the wheels while allowing them to turn at different speeds. Maintain your rear differentials with fluid service. By keeping your vehicle lubricated with fluid you are protecting the life of the gears in your vehicle. This is done as preventive maintenance to help stretch the life of your vehicle.

Whether you are hearing odd noises or the Check Engine light has come on, a professional diagnostic scan of your vehicle's electronic system is the only way to get to the heart of the problem. United Motorsports is your local expert specializing in accurate engine diagnostics.

We have an extensive line of state of the art diagnostic equipment and software for computerized vehicles. If the "check engine" light is on, first thing we will do is hook up our equipment to your vehicle. Next, we will pull the trouble codes and process the engine diagnostics. And finally, we will target the issue and fix your vehicle.

Engine repair begins with diagnostics. All newer model cars use computers to communicate engine repair needs. We utilize the most current and up-to-date diagnostic equipment, which allows our technicians to quickly identify the necessary engine repair. From gaskets to a complete overhaul or new engine, our technicians and equipment are second to none for minor or major engine repair in Yucaipa, Banning and the Inland Empire.

While your exhaust system helps reduce noise output from your vehicle, it also significantly reduces harmful emissions from being released into the air. When your muffler and exhaust system functions properly, it significantly reduces your vehicle’s harmful impact on the environment. It also significantly improves the functionality of your vehicle.

Your vehicle’s exhaust system involves several components. The exhaust manifolds right behind the engine collect exhaust gases and connect to cylinder heads. Gases collected by your vehicle’s exhaust manifolds are analyzed by oxygen sensors and refined by catalytic converters before being muffled by the mufflers. By the time these gases reach the muffler, the emissions system has made your car run smoother, quieter and cleaner.

If any of the components of your vehicle’s exhaust system fail, your gas mileage and quality of air around you can be affected. The expert team at United Motorsports can inspect and repair your entire exhaust system to ensure your vehicle is running cleanly.

Four wheel drive systems allow all four wheels on a vehicle to spin simultaneously. All 4WD vehicles have a transfer case between the front and rear axles that prevents the axles from spinning at different speeds. The transfer case allows the engine to provide maximum torque to the axle and wheels in order to maintain traction. Different 4WD configurations exist, and each variation employs different technologies to meet the needs of the driver. Some 4WD systems have a locking differential. This means both wheels on the axle will turn together to achieve maximum traction. Another variation is the limited-slip differential. It can detect a slide or slip in one wheel and send torque to the other wheel to regain traction. A manual hub requires users to manually engage the front wheel drive mechanism in order to fully engage the 4WD system, while an automatic hub allows users to automatically command the front wheels in order to engage the 4WD system. Our service staff has extensive experience working on all types of 4WD systems.

When temperatures rise, there’s nothing more refreshing than getting into a cool, air-conditioned car. However, auto A/C and heating systems can wear over time with use, and your refreshingly cold air becomes…hot. United Motorsports can perform routine auto A/C maintenance and heating system repairs which will keep your car comfortable for you and your passengers. We offer air conditioning system diagnostic and service, heating system diagnostic and service.

By replacing the old transmission fluid, the expert team at United Motorsports essentially gives your vehicle’s transmission new life. The new fluid restores your clutch’s holding power. This reduces slip and heat production. Additionally, flushing the old fluid gets rid of small bits of clutch material and metal shavings, which can damage your transmission by clogging passages and wedging themselves between moving parts. Getting rid of the old fluid reduces wear within the transmission. Replacing old fluid with new also provides better lubrication within the transmission, which boosts the holding ability of the transmission’s friction components. Improved lubrication also results in less heat. By decreasing friction and heat, your transmission will work better for a longer amount of time. A simple service can save you the money and time that come with a major transmission repair or replacement.

Often called the life blood of your engine, your oil will literally make or break your car. All vehicles need regular oil and filter changes between 3,000 and 5,000 miles, but some will require more special attention depending on their usage in the field or on the road. We provide regular oil changes in Yucaipa as well as help you outline a proper maintenance schedule for your specific needs. Your car depends on new oil and oil filters to keep it running efficiently. Oil needs to be kept full, clean from fragments, and not burnt. Oil lubes essential engine components. Moving parts create rubbing, and over time that rubbing wears the parts down. Oil, or a synthetic lube, could lessen the damage from the heat by those moving components. By having a regular oil change service schedule, you will positively increase your engine's efficiency as well as expand the life of your vehicle’s engine.

The best way to prevent long-term and costly problems with your vehicle is to keep up with its preventative maintenance schedule. One major key to successfully making sure you are doing all you need to do is to read your vehicle’s owner’s manual. Regardless of your vehicle’s make or model, its owner’s manual will contain a maintenance schedule. Every make and model is different, and standby beliefs such as “You have to change your oil every 3,000 miles,” may not apply to your car. The maintenance schedule within your owner’s manual is provided by the people who understand your vehicle the best—the company that built it. The manufacturer provides suggestions for how often you need to change your oil, filters, driving belts, timing belts and more. While some preventative maintenance—such as topping off fluids—can be performed by the vehicle’s owner, other, more complicated procedures should be done by experts like the team at United Motorsports. Our team can keep your vehicle in top shape by performing peventive maintenance on your vehicle.

Over time, antifreeze breaks down and loses its efficiency. If not drained and replaced, old antifreeze can lead to corrosion. During a cooling system flush and fill, our staff will drain the antifreeze from the radiator, flush the cooling system, and fill the radiator with new antifreeze. The cooling system’s cooling fan circulates air through the radiator and passes excess heat out of the engine. If the cooling fan malfunctions, your vehicle’s engine will overheat. During an inspection of the cooling system service, our experts will check the cooling fan for damage and the fan belt for cracks. Because the radiator is responsible for cooling the antifreeze as it circulates throughout the cooling system, a leak or a broken radiator hose can lead to major engine failure. A radiator pressure test is one way we can check for potential leaks or radiator damage. Ultimately, neglecting basic cooling system and radiator maintenance can lead to a potential radiator replacement and major engine or radiator repairs down the road.

Slow cranking engines and dim headlights can sometimes point to a problem with your vehicle’s starting and charging system. Because the battery is required for the electrical charge needed to start the rest of the electrical system, a weak or dead battery can also prevent your car from starting. If a jump start refuses to revive your battery and the starting system, our staff may need to take a closer look at the other components of the starting and charging system to determine whether or not you need a starter replacement or an alternator replacement. All components within your vehicle’s starting and charging system are necessary to ensure proper working order, and one bad link between them can render the entire electrical process useless. If you experience problems with starting your vehicle or maintaining its power even after trying a jump start, then allow our service staff to perform a starting and charging system check on your vehicle today.

Shaky, unsteady, off-center, and stiff steering are all cause for getting a steering system repaired, while excessive bouncing or swaying during bumps and intermittent control while driving and braking are cause for a suspension system inspection. Uneven tire wear is also a potential sign of a suspension problem, though this may also point to alignment issues. Have you hit a pothole recently? Potholes can cause damage to steering and suspension components. Worn suspension components will reduce the stability of the vehicle and the control of the driver. Because suspension system components combine into one working unit, suspension issues that go untreated have the potential to increase the wear on other suspension components, which may result in more extensive repairs down the road. If you experience any of the above symptoms, contact us online or by phone today.

An inspection can identify potential vehicular problems early and save you time and money down the road as a result. We are equipped to handle a variety of vehicle inspections. During every inspection, our service staff uses a series of quality checkpoints to determine whether your vehicle should be deemed safe for highway operation. If your vehicle happens to fail a quality checkpoint during the inspection process, you may be entitled to a retest depending on the guidelines that regulate vehicle inspections in your area. If you have questions about our vehicle inspection certification or licensing, or if you are ready to schedule an inspection, please contact us online or by phone.