Auto Electrical
A1 Auto Mechanics provides the best electrical auto service in Costa Mesa, hands down.
Heating & Air Conditioner Repair
For the best cooling and heating auto repair service in Costa Mesa, trust A1 Auto Mechanics.
Check Engine Light, Diagnostic, and Repair
When that check engine light comes on, it’s hard not to feel annoyed or even worried.
Maintenance & Auto Service
It’s a fact: regular, quality maintenance extends the life of your vehicle. It also gives you the peace of mind you need.
The Absolute Best Car Service in Costa Mesa, CA
A1 Auto Mechanics
What sets A1 Auto Mechanics apart from all of the others in Costa Mesa, CA?
Quality Service
We use the latest diagnostic equipment and high-quality parts to ensure your vehicle is repaired to the highest standards.
Experienced and Certified Technicians
Our technicians are highly skilled and certified professionals with years of experience in the auto repair industry. They have the expertise to diagnose and repair any problem your vehicle may have.
Customer Satisfaction
Our goal is to exceed your expectations and ensure your complete satisfaction with every visit.
Our Customer Reviews
Recently Serviced Vehicles
-
2006 Toyota Corolla
Mileage141,594Service Date4/21/2025Services Performed- Technician performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. Our technician inspected and scanned the vehicle system, and noted the engine idling rough , test came back with codes : MISFIRE(P03031 cylinder # 3, and P0171 system too lean, and therefor; he recommends to replace all spark plugs, 1 ignition coil (preferably all 4 but customer declined), air mass flow sensor(MAS), and the vehicle is due for an oil change as well, plus throttle body cleaning. The customer approved the job recommendation, and the technician ordered the parts, removed and replaced one ignition coil and spark plugs, changed oil and filter, air filters are clean and OK. The technician then scanned the vehicle again, both codes went away but engine was still idling rough, checked and performed a FUEL PRESSURE TEST, it was below( 35 to 38) normal specification of 44 to 50, recommended to replace FUEL PUMP, and the customer approved it plus the technician mentioned that the MAS was not needed, therefor; gave credit back to the customer. After the work was done, test drove the vehicle, the fuel pump replacement made a big difference and rough idle went away but code P0171 was still evident. At this point, The technician smoked the vehicle system, a leak was prominent from the fuel tank CAP, replaced it with an oem one, cleaned up the MAS, recommended to replace Oxygen sensor as well , cleared the code, test drove the vehicle, its running fine now, no check engine light, and per customer's request took the vehicle to our neighbor for an SMOG TEST, it passed the test, and issued a certificate # UM563048C. Our technician stated the vehicle has other problems with the front and rear brakes that are WARPED, and when braking, its VIBRATING and ITS NOT SAFE, and the front lower control ARMS and BUSHINGS needs immediate attention as well.
- REMOVE AND REPLACE
- Lubricate and check chassis. Change oil and oil filter, Reset the service / maintenance light-if applicable- , Check air filter and breather filter. Preform basic safety inspection. Road test vehicle , No problem at this time.
- Oil Disposal
- REMOVE AND REPLACE
- GAS TO BE ABLE TO DRIVE THE VEHICLE
- SMOG TEST AND CERTIFICATE
SUZANNE/ JOE P. gave our service a 5 star review on 4/21/2025 -
2019 BMW 330i
Mileage68,800Service Date4/8/2025Services Performed- Technician noticed the CHECK ENGINE LIGHT WAS ON even before bringing the vehicle in, and called the customer to let him know , performed multipoint visual inspection, checked Oil, Fluids ,Tires and Brakes. With the customer's pre approval on the total amount to do the brake job for front and rear, the technician ordered the parts but he could not find the WHEEL LOCK TO REMOVE THE WHEELS. Then our technician ordered one, finally removed and replace the front and rear brake pads, sensors, and rotors, checked for a basic safety, test drove the vehicle, no problems on the brakes now but the check engine light is on, and the vehicle needs 4 new tires.
- Replace front brake pads linings and front brake disc rotors. Clean and repack wheel bearings if equipped. Clean and lubricate brake calipers and slide mechanisms. Check and fill brake fluid. Bleed air from system. Road test vehicle.
- Replace rear brake pads linings and rear brake disc rotors. Clean and repack wheel bearings if equipped. Clean and lubricate brake calipers and slide mechanisms. Check and fill brake fluid. Bleed air from system. Road test vehicle.
HUSSAM B. gave our service a 5 star review on 4/9/2025 -
2010 Jeep Liberty
Mileage181,977Service Date3/24/2025Services Performed- Technician noted the vehicle radiator was replaced last week , and there was no sign of leaking after the work was done. He racked the vehicle up, performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. Our technician noticed coolant is leaking from WATER PUMP, HEATER HOSE, and THERMOSTAT that there was sign of leaking last week. Our technician contacted the customer to notify her, and she approved the job recommendation. He then ordered the parts, removed and replaced them, repaired and restored the heater hose, added coolant, waited for the thermostat to kick in, no leaks, no codes, no misfire, took the vehicle for road test drive, no problem now.
- REMOVE AND REPLACE, AND FIX AND PRESERVE THE HEATER HOSE
MARGARET E. gave our service a 5 star review on 3/24/2025 -
2006 Hummer H2
Mileage136,880Service Date2/19/2025Services Performed- Technician noted "the vehicle was towed here, performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System." The technician inspected the radiator that had a CRACK in it, and it was leaking, and the customer knew it from another shop.The technician ordered the radiator and thermostat and coolant after the customer gave him authorization. The vehicle has other issues that has to do with sever oil leaking from multiple places of Rear Main Seal, Head Cylinder, and another that is not visible now. The technician removed and replaced the radiator and thermostat, added coolant, turn the engine on, waited for the thermostat to kick in, test drove the vehicle, no warning signs or code or misfire, no OVERHEATING, AND THE GAGE IS NORMAL. He then removed and replaced the wiper blades per request.
- REMOVE AND REPLACE
MOHSEN A. gave our service a 5 star review on 2/19/2025 -
2010 Jeep Liberty
Mileage181,275Service Date2/19/2025Services Performed- The customer had her diagnostic done somewhere else, and wanted us to replace the front driver side CV AXLE. Technician test drove the vehicle to understand the customer's complaint, performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. Our technician also diagnosed the vehicle's radiator is CRACKED and its leaking. It looks like someone tried leak stop but it did not work. So based on the customer authorization, the technician ordered the cv axle, removed and replace it, checked for a basic safety, no problem with this cv axle now. The customer did not want to do anthing with the radiator leak for now.
- RE
MARGARET E. gave our service a 5 star review on 2/19/2025 -
2004 Acura MDX
Mileage175,034Service Date1/14/2025Services Performed- Technician test drove the vehicle to understand the customer's complaint, performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. Our technician noted that THE VEHICLE HAS MULTIPLE ENGINE CODES FOR EMISSION AND ENGINE PERFORMANCE. TO CHECK THE EVAP SYSTEM THE EVAP SYSTEM WAS SMOKED TO FIND ANY VISIBLE LEAKS. THE SMOKE TEST REVEALED THAT THE PURGE VALVE AND THE EVAP CANISTER VALVE INTERNAL SEALS ARE DEFECTIVE AND ALLOWING FUEL VAPOR TO LEAK OUT, THE GAS CAP SEAL LOOKS WORN OUT AND NOT SEALING CORRECTLY. THE VEHICLE ALSO HAS 1 BAD O2 OXYGEN SENSOR SENDING OUT ERRATIC VOLTAGE TO THE ECM. THE KNOCK SENSORS HAVE A BROKEN WIRE AND THE ECM IS NOT RECEIVING ANY INFORMATION. So at this time, our technician recommends to replace knock sensors, oxygen sensor, , carbon canister, canister purge valve solenoid, and a fuel tank cap. The customer authorized the job recommendation, and the customer chose to pay some down payment and use SNAP FINANCE for the balance. The technician ordered the parts, removed and replaced them, checked carefully for a basic safety, tested and scanned the system, no codes, no misfire now, test drove the vehicle, the customer needs to drive the vehicle for a white to get it ready for smog, if smog test is an issue.
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- REMOVE AND REPLACE
MICHAEL N. gave our service a 5 star review on 1/14/2025 -
2015 Honda Accord
Mileage85,691Service Date12/26/2024Services Performed- Technician performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. The technician changed oil and filter, topped off fluids, reset the maintenance light, removed and replaced engine and cabin air filters as they were very dirty and dark. Our customer at the end decided to do a tire rotations as well.
- Lubricate and check chassis. Change oil and oil filter, Reset the service / maintenance light-if applicable- , Check air filter and breather filter. Preform basic safety inspection. Road test vehicle , No problem at this time.
- Oil Disposal
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- Technician rotate all tires, re install wheel to vehicle and torque lug nuts to manufacturer's specifications.
SHERI H. gave our service a 5 star review on 12/26/2024 -
2011 Hyundai Accent
Mileage149,847Service Date12/17/2024Services Performed- Technician TEST DROVE THE VEHICLE to understand the customer's complain, performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. After racking the vehicle and inspection, our technician diagnosed the alternator belt, power steering belt, a/c compressor belt, and timing belt have signs of old wear and tear, and valve cover gasket is leaking oil, engine and cabin air filters both are dirty and dark, and spark plugs are old and gaped, and finally the engine oil is dark and suspension have issues as well. The customer approved the work except the suspension. Our technician ordered the parts, started tearing down and removing cover, valve cover, spark plugs to access timing belt, removed and replaced timing belt, power steering and alternator belts, removed and replaced water pump, valve cover gasket, removed and replaced spark plugs, changed oil and filter, started closure. He then checked for a basic safety, added coolant, turned the engine on, waited for thermostat to kick in, checked for any sign of leaking, scanned the vehicle, no codes, no leaking, test drove the vehicle, no problem now except the suspensions.
- Lubricate and check chassis. Change oil and oil filter, Reset the service / maintenance light-if applicable- , Check air filter and breather filter. Preform basic safety inspection. Road test vehicle , No problem at this time.
- Oil Disposal
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- REMOVE AND REPLACE
REBEKAH H. gave our service a 5 star review on 12/17/2024 -
2009 Lexus ES 350
Mileage229,845Service Date12/7/2024Services Performed- Technician performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. The technician removed and replaced the battery as requested, checked the charge, its fine now.
- REMOVE AND REPLACE
JABRA B. gave our service a 5 star review on 12/7/2024 -
2015 GMC Sierra 2500 HD
Mileage185,295Service Date12/5/2024Services Performed- Technician performed multipoint visual inspection, SCANNED THE VEHICLE SYSTEM ,checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. Our technician requested for an hour of labor permission to explore and diagnose from our customer in which it was granted and authorized by the customer. After extensive inspection and scanning, our technician diagnosed code P003A, this code is caused by erratic performance from the TURBOCHARGER. It seems a VARIABLE GEOMETRY POSITION SENSOR for the turbo has been replaced previously. A turbo module reprogramming is required when replacing turbo components. Therefore; our technician recommending to: Replace DEF REDUCTANT LEVELING MODULE, replacing variable geometry turbo vein POSITION SENSOR, and then REPROGRAMMING. The customer approved the job recommendation, then the technician ordered the parts, removed and replaced the def reductant leveling module by completely removing the reductant reservoir tank the fuel tank, removed and replaced the turbo position sensor, checked for a basic safety, started the vehicle, added DEF fluid as it was low, added coolant, let the engine run for a while, noticed the radiator is leaking from the top corner, performed a pressurized test, dignosed that the radiator has a crack in it but the customer does not want to take care of it now. The technician then took the vehicle for a road test drive, no issues except now he had to PROGRAM the turbo sensor. The programming was done successfuly.
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- REPROGRAMMING
JOHN R. gave our service a 5 star review on 12/5/2024 -
2016 Mercedes-Benz E350
Mileage102,691Service Date11/15/2024Services Performed- Technician test drove the vehicle, performed multipoint visual inspection, connected the vehicle system to a live data scanner, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes , A/C, and Heating System. After vigorous inspection, the technician diagnosed that the cylinder #3 has a misfire, and he needed 2 hours of labor authorization to remove intake manifold and other components to access the spark plugs and ignition coils, and our customer granted us the authorization for diagnostic. With this approval, our technician got to work and diagnosed that the cylinder #3's misfire is caused by POOR RESISTANCE of two other IGNITION COILS, and it will cause an INTERMITTENT SIGNAL and misfire. Cylinder # 3 coil would try to compensate a lack of voltage, therefor; it will over heat causing EROTIC BEHAVIOR. The technician then called our customer to COMMUNICATE AND NOTIFY HIM OF HIS DIAGNOSIS AND FINDINGS, and he approved replacing all ignition coils. So the technician ordered the coils, removed and replaced them, scanned the vehicle system, the misfire disappeared, changed oil and filter, replaced engine and cabin air filters, topped off fluids, adjusted the tires air pressure, and reset the maintenance light. Tire rotation is not possible to scattered tires, then he took the vehicle for a road test drive, no problem now.
- Lubricate and check chassis. Change oil and oil filter, Reset the service / maintenance light-if applicable- , Check air filter and breather filter. Preform basic safety inspection. Road test vehicle , No problem at this time.
- Oil Disposal
- REMOVE AND REPLACE
- REMOVE AND REPLACE
- REMOVE INTAKE MANIFOLD AND REMOVE AND REPLACE ALL 6 DIRECT IGNITION COILS SPARK PLUGS
CHRISTIAN E. gave our service a 5 star review on 11/15/2024 -
2016 Jeep Wrangler
Mileage91,713Service Date11/11/2024Services Performed- Technician test drove the vehicle, performed multipoint visual inspection, checked Oil, Fluids, Belts, Battery, Charging System, Tires, Brakes, A/C, and Heating System. Our technician noted Under Interior/ Exterior, there is no CODES or CHECK ENGINE light or warning light on, headlights, horn, wiper blades, parking brakes, turn signals are OK, all fluids are OK.Under hood, engine air filter, belts, hoses are OK but BATTERY has internal issuses, and SPARK PLUGS are gaped out and need to be replaced (at almost 92k miles). Under vehicle, the control arms, tie rods, ball joints, and steering gear are OK but front and rear STRUTS/ SHOCKS need attention as the bushings are torn, front and rear differentials are OK, and transfer case is OK as well, front and rear brake pads and rotors are OK but there is an OIL LEAK from the oil filter housing that needs attention. Under the tire inspection, front two tires are OK but the vehicle needs two rear tires. So our technician recommends to replace oil filter housing, upper and lower intake manifold gasket (in order to access the oil filter hosing, the intake manifold needs to be removed, and when its removed, gasket can not be reused), add coolant, replace spark plugs, add 2 new tires, and replace front and rear and rear struts/ shocks.
CELIA T. gave our service a 5 star review on 11/12/2024
Contact Us Today for an Auto Repair Estimate
Our friendly and knowledgeable staff is always happy to answer any questions you may have and will keep you informed throughout the entire repair process. So why pick us for all your Costa Mesa auto repair needs? The answer is simple: expertise, customer service, affordability, convenience, and quality. Contact us today to schedule your appointment and experience the difference for yourself.
Hours
Mon-Fri : 8am-5pmSaturday : 8am-2pm
Sunday : Closed
Address
A1 Auto Mechanics
2945 Randolph Ave Unit A
Costa Mesa, CA 92626
