Mobile mechanic in Chino, Chino Hills & Ontario.
Coastline Auto is a mobile mechanic serving Chino, Chino Hills, Ontario, Rancho Cucamonga, and nearby cities. We bring diagnostics, brake repair, and no-start help to your driveway, so you can skip the tow truck and the waiting room.
Mobile auto repair we bring to your driveway.
From check engine light diagnosis to mobile brake repair and same-day no-start help. If we can do it at your home or office, we will. If we can't, we'll tell you straight up and point you to a trusted shop.
Check Engine Light Diagnosis
Mobile check engine light diagnosis with professional OBD-II scan tools. We pinpoint codes, electrical faults, and warning lights at your location.
Request a diagnosisMobile Brake Repair
Mobile brake repair done in your driveway: pad and rotor replacement, brake fluid flush, and squeak or grind diagnosis.
Request brake repairAlternator & Starter Replacement
Car cranks slow or won't start? We test your charging system and handle alternator and starter replacement on-site.
Request a quoteCar Won't Start? No-Start Help
Car won't start in your driveway or a parking lot? Same-day mobile no-start diagnosis and repair when available.
Get same-day helpBattery Replacement
Mobile battery testing and replacement, plus proper disposal of your old battery, usually in under an hour.
Request a battery swapPre-Purchase Inspections
Buying a used car? We meet the seller and give you an honest, written pre-purchase inspection before you pay.
Book an inspectionOil Changes
Full-synthetic and conventional oil changes done at your home or office. Filter included.
Request an oil changeCooling System Repairs
Coolant flush, hoses, thermostats, and water pumps. Stay cool through Inland Empire and SoCal summers.
Request a quoteSpark Plugs & Tune-Ups
Restore smooth idle, better mileage, and quicker starts with a proper spark plug service and tune-up.
Request a tune-upSensors & Electrical
O2 sensors, MAF, MAP, and knock sensors: we read codes, replace the part, clear the light, and retest.
Request a diagnosisBook a mobile mechanic in four easy steps.
Tell us what's going on
Send a quick description, photo, or the codes you're seeing. No jargon required.
Get a quote or appointment
We respond fast with a transparent estimate or schedule a diagnostic visit.
We come to your location
Home, office, apartment lot, or roadside - wherever the car is, we show up.
Drive away the same day
Most jobs are finished on-site. No tow truck, no waiting room, no rideshare home.
The mechanic experience, redesigned around your time.
Built for busy people, families, students, and anyone who'd rather not lose a Saturday to a repair shop waiting room.
No tow trucks (when avoidable)
If the job can be done mobile, we save you the tow bill - period.
Clear, plain-English communication
We explain what's wrong, what's optional, and what can wait.
Professional diagnostic equipment
Modern OBD-II scan tools and OEM-level software, not parts-store guesses.
Convenient scheduling
Evenings and weekends available. Book around your real life.
Honest recommendations
We won't upsell repairs your car doesn't need. Ever.
BYO parts welcome
Already have parts? Great. Need them sourced? We'll quote both options up-front.
Trusted by drivers across the Inland Empire.
Real 5-star reviews from Coastline Auto customers on Nextdoor and Yelp.
“I have 2 cars, a 2023 Cadillac Escalade and a 2016 Mercedes C350. My C350's engine was running rough and Alex diagnosed it in under an hour and had it fixed the same day. He also did the brakes and an oil change on the Escalade real fast. The best part is Alex is an honest guy, which is hard to come by, and great about pricing. I thought because he was mobile he'd charge more - that wasn't the case at all. If you need anything done on your car, Alex is your guy.”
“I recently had Alex come out to work on my Mercedes and couldn't be happier. He diagnosed and fixed an issue causing my check engine light to stay on - something I'd been dealing with for a while. He was knowledgeable, honest, and took the time to explain everything in a way that made sense. The convenience of him coming to me made the whole process so much easier. My car is now running great.”
“I needed a pre-purchase inspection on a used car. Alex's check was very thorough - he had two pages of notes and flagged a couple of red flags. He didn't tell me whether to buy it, but based on his findings I didn't. Since then he's worked on my '06 Charger 5.7, found what was causing the codes, and corrected them - it passed SMOG days later. He doesn't try to sell things that aren't needed. I'll continue to use Alex.”
“Anyone looking for a good mechanic, Alex is your person. I can't thank him enough for helping me with my van. I was worried I'd have to take it to the dealership and spend way more than I could afford, but he figured out the issue and fixed it without all that hassle. He was patient, understanding, and very professional. His pricing was fair and the service was done in a timely manner. Highly recommend.”
“Alex is a true professional. He recently inspected our Toyota and was completely honest with us. While we believed a strut replacement was necessary, he assured us no such repair was needed. He could have easily taken advantage of the situation, but instead he demonstrated integrity. He is exactly the kind of mechanic everyone needs.”
“Alex is the best!! He's professional and very knowledgeable - he does his research if needed to get the job done. He worked on my daughter's and wife's cars and we couldn't be happier. He's very honest and transparent, and his prices are reasonable. We will definitely be using his services for our vehicles. Thanks Alex!!”
Mobile mechanic serving Chino, Chino Hills & Ontario.
We bring the shop to you across the Inland Empire and North Orange County. If you need a mobile mechanic near you in any of these cities, we've got you covered.
Cities & areas served
Don't see your city? It probably still works, just ask.
Questions, answered.
Tell us what's going on.
Fill out the form and we'll get back to you within a few hours with a quote or a diagnostic appointment. Prefer to talk? Give us a call.