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Sun Auto Tire & Service Flower Mound
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Home • Find a Shop • Texas • Flower Mound • Sun Auto Tire & Service Flower Mound
Store #4250
Sun Auto Tire & Service Flower Mound
1421 Justin Rd Flower Mound, TX 75028
Monday 8:00am - 6:00pm
Tuesday 8:00am - 6:00pm
Wednesday 8:00am - 6:00pm
Thursday 8:00am - 6:00pm
Friday 8:00am - 6:00pm
Saturday 8:00am - 5:00pm
Sunday Closed
(469) 540-9256
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About Us

Our Services

At Sun Auto Service we offer a comprehensive range of automotive repair services from engine diagnostics and brake repairs to transmission services, all performed by our certified technicians. We stand behind our skills with national warranty on our work, ensuring you drive away with complete confidence in the safety and reliability of your vehicle.

Sun Auto Tire & Service Flower Mound | 1421 Justin Rd

Tire Promo
Tire Promo
Tire Promo
Tire Promo

*From 8/21/2025-8/23/2025, receive a full synthetic oil change for $49.99 (or a synethic blend oil change for $24.99) AND receive a voucher for a FREE oil change of equal value to be used within one year. Voucher may be used on original vehicle or another vehicle. Service includes up to five (5) quarts of motor oil, new oil filter and complimentary digital vehicle inspection. Vehicles requiring special oil or more than five quarts of oil may incur additional costs. Price good for most cars & light trucks. Must present coupon at time of service. No rainchecks. State or Local taxes and/or surcharges, as applicable. Certain restrictions apply. See store for complete details. CODE: OILM24, OILM49

*Purchase any two tires and get the third and fourth tire free. This promotion requires the purchase of Tire Protection Plan on all four tires at regular price. Maximum discount value is $300. Offer requires additional fees related to Mounting, Balance, Valve Stem or TPMS Service plus State Tire User, Disposal and/or Recycling Fee, as applicable. Must be installed. No rainchecks. State or Local taxes and/or surcharges, as applicable. Certain restrictions apply. See store for complete details. Valid 8/21/2025-8/23/2025. CODE: B2G2

*Get a complimentary & complete Digital Vehicle Inspection and receive a free diagnostic at no additional charge. Price good for most cars & light trucks. Must present coupon at time of service. No rainchecks. State or Local taxes and/or surcharges, as applicable. Certain restrictions apply. See store for complete details. Valid 8/21/2025-8/23/2025. CODE: DIAGFREE

Customer Feedback in Flower Mound

Read reviews from satisfied customers who trust Sun Auto Service 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.