Text & Save · Get an extra $10 off your next service* tap to join or Text JOIN to 40819 for exclusive text-only deals!

SunAuto Tire & Service

16350 FM 620, Round Rock

Store No. 4152

Open today until 6pm

Auto Service Deals & Tire Savings

Auto Maintenance

Auto Maintenance

Recommended Services

Explore our trusted services designed to keep your vehicle performing at its best.

Fluid Flushes

Fresh fluids, better performance

Learn more

Alignments

Straight steering, even wear

Learn more

Batteries

Fast testing & replacement

Learn more

Preventative Maintenance

Stay ahead of repairs

Learn more

Vehicle Inspection

Checkups for peace of mind

Learn more

Transmission Service

Smooth shifting again

Learn more

Diagnostic Service

Find & fix issues fast

Learn more

Oil Change

Quick & clean oil service

Learn more

Tire Replacement

Replace tires for safety

Learn more

Tire Rotation & Balance

Extend the life of your tires

Learn more

Flat Repairs / Tire Repairs

Fix flats & leaky tires

Learn more

Brake Repair

Safe, reliable stopping

Learn more

AC & Heating Repair

Stay cool & comfortable

Learn more

Engine Repair

Power & performance fix

Learn more

Steering & Suspension Repair

Smooth, stable handling

Learn more

Sun Auto Tire & Service Round Rock | 16350 FM 620

Navigating the busy roads of Round Rock puts a consistent strain on your vehicle's suspension and braking system. This is especially true during rainy weather when your vehicle's performance and traction are crucial for safety. Sun Auto Tire & Service in Round Rock is committed to delivering honest, expert automotive repair and maintenance you can rely on. Our shop is a trusted destination for drivers in Cat Hollow and Forest Creek who require professional care from a team of skilled technicians. Our ASE-certified technicians provide a comprehensive range of services, including tire rotations, brake repairs, and oil changes. We also handle more complex engine and transmission work, ensuring that every vital system is performing at its best. We provide clear and straightforward communication, using digital vehicle inspections to show you exactly what is happening with your car or truck. To enhance your experience, we offer same-day service on many repairs and complimentary towing with major mechanical work. We also carry a wide selection of tires from leading brands like Michelin and Bridgestone to ensure your vehicle has the best possible grip on the road. Located at 16350 FM 620 near the intersection with O'Connor Drive, our shop is easily accessible for all your automotive needs. We serve the Round Rock community with a commitment to quality results and the protection of a national warranty. As a member of the Sun Auto Network, we offer top-tier car care backed by national resources and a commitment to excellence. To keep your vehicle performing at its best through every season, our team is proud to offer the following specialized maintenance and repair solutions.

Shop with Confidence

Free Digital Vehicle Inspection

A clear vehicle status report plus expert technician insights, so you can plan ahead with confidence.

Learn More

Flexible Financing

Get the service your vehicle needs now and pay over time.

Learn More

National Warranty

24-month/24,000-mile nationwide limited warranty on qualifying repairs.

Learn More

Reviews from our customers

Read reviews from satisfied customers who trust Sun Auto for reliable car repair, quality auto service, and expert vehicle maintenance.

Still have questions? We’ve got answers.

We've put together the most important information on tires, vehicle maintenance, repairs, warranties, and more to help you drive with confidence.

How often should I service my vehicle?

You should service your vehicle every 5,000 to 7,500 miles or every 6 months, whichever comes first, for routine maintenance like oil changes and inspections. Always check your owner’s manual, as some vehicles and driving conditions may require more frequent attention to keep everything running smoothly and safely.

How do I know what services to perform on my vehicle and when?

Any of our friendly, neighborhood locations can help you determine the schedule that’s best for your car. In many cases, the maintenance schedule is determined by the manufacturer for optimal service life for your vehicle; this can be found in the owner’s manual.

Do I need an appointment, or can I walk in?

Appointments are recommended, but walk-ins are always welcome.

Will I get an estimate before work begins?

Absolutely. We provide clear estimates and only complete the work you approve.

Why is my check engine light on?

It could be something simple or serious. We recommend a diagnostic scan to find the cause.

How do I know when my next oil change is due?

After each oil change at Sun Auto Tire & Service, our technician will place a reminder sticker in the upper left-hand corner of your windshield. For added convenience, we can also send you a service reminder when it’s time for your next appointment. To enroll in this program, ask your Service Advisor for details.”

Is my warranty voided if I get non-dealer work done?

No. In fact, it is against the law for a manufacturer to dishonor their warranty just because the vehicle was serviced elsewhere. As long as the service is performed by capable car mechanics like the ones at your friendly neighborhood Sun Auto Tire & Service, your warranty is valid.