(925) 777-9234


Our auto repair shop is conveniently located in Antioch, CA. Our quality ASE (Automotive Service Excellence) certified mechanics at Reliable Auto & Diesel Repair employ today’s latest automotive technology and are equipped to handle all major and minor auto repair services on foreign and domestic vehicles. Below are some of the many auto repair services that we offer:



  • Diesel Engine Service
  • Fleet Service
  • Gasoline Engine Service
  • Shuttle Service
  • Check Engine Light Diagnosis
  • Towing Arrangements
  • Transmission Service
  • Air Conditioning
  • Air Filter Replacement
  • Axle Replacement
  • Battery Replacement
  • Belts & Hoses
  • Brake Systems
  • Clutch Repair
  • Computer Diagnostics
  • Electrical
  • Exhaust System
  • Fuel Injection
  • Light Replacement
  • Oil Change
  • Power Steering
  • Radiator Service
  • Suspension Work
  • Tire Pressure
  • Wheel Alignment
  • Preventative Maintenance



Oil and Oil Filter Service
Experts recommend changing the oil and oil filter in your vehicle every 3 months or 3,000 miles, whichever is first. It’s an essential way to maximize engine protection.

Cooling System Service
Our team will flush the cooling system, conduct a pressure test, check hoses and cap and check connections.

Air Conditioning Service
One of our trained air conditioning specialists will inspect your car’s air conditioner, all NC lines, evaporator and compressor for leaks and wear.

Driveline Service
We will remove old worn-out gear oil from the front and rear differential and transfer case.

Fuel/Air Induction Cleanup
Using specialized equipment, our technicians will quickly and effectively clean intake manifolds, ports, intake valves and combustion chambers and install injector cleaning additives in tanks. This service will restore lost power and performance and will reduce harmful exhaust emissions.

Power Steering Flush
Our technicians use a powerful cleaner to dissolve gum and varnish in your car’s power steering unit. Next, we will flush old, worn-out contaminated fluid and install fresh new fluid fortified with a special antioxidant and anti-wear ingredients to prevent expensive mechanical failure.

Transmission Service
Using the latest in state-of-the-art technology, we will install a safe and effective cleaner to suspend harmful varnish and sludge from the transmission valve body, torque converter and lines and install new high-tech fluid with conditioners.

Make sure your vehicle’s circuits are working properly with our electrical repair service. We can repair shorts in the circuits as well as service any other part of your car’s electrical.

General Auto Service
Have your vehicle serviced here. We provide quality auto repair service for all vehicle makes and models as well as state-of-the-art technology and diagnostics for all foreign and domestic vehicles.

Tips for your Vehicle

A properly maintained vehicle is safer, performs better, uses fuel more efficiently and saves the owner money. Reliable Auto Center can prevent your vehicle from producing excessive emissions and can help your vehicle remain safe for you on the road by performing safety checks between annual car inspections, and by following a program of regular vehicle maintenance as recommended by the manufacturer.

At Reliable Auto Center we offer a free car inspection when combined with any repair.
Affects Miles Per Gallon Fuel Wasted

MPG Penalty: up to 2 mpg
The engine can use more than 10000 gallons of air for every gallon of fuel burned, so its easy to see how important the air filter is. The air filter should be checked every oil change.

MPG Penalty: 1-2 mpg
Under inflated tires increase rolling resistance and cause a decrease in fuel economy

MPG Penalty: up to 1 mpg wasted
Dirty engine oil causes friction in internal engine parts, reducing efficiency

MPG Penalty: up to 2 mpg wasted
Damaged, missing or loose caps cause over 147 million gallons of fuel to evaporate each year.

MPG Penalty: up to 2 mpg wasted
When a spark plug wears out it can cause insufficient combustion, resulting in wasted fuel.

MPG Penalty: up to 3 mpg wasted
A worn oxygen sensor is unable to detect and adjust the air fuel mixture correctly and can cause your vehicle to use more fuel than it needs to.

MPG Penalty: up to 1.5 mpg wasted
A dirty fuel filter allows impurities like dirt and rust into the fuel system, causing the engine to use more fuel.


  • Reliable Auto & Diesel Repair

    3291 E18th Street
    Antioch, CA 94531

  • Phone: (925) 777-9234

  • Feel free to call or email us to schedule your next appointment.

    Business Hours

    Monday - Friday
    8:30AM - 5:00PM

    10:00AM - 4:00PM

    Sunday - Closed