Duffy's Auto Service

Give us a call today 940-243-7400

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Duffy's Auto Service


    Mechanic - Car Repair and Automotive Service

Our automotive services can help increase your vehicle's fuel economy, safety, driveability, and performance. We use high-tech diagnostic equipment to guarantee your vehicle is repaired and/or serviced correctly the first time around, and we only use the highest quality replacement parts, filters, oils, and components when it comes to your car.

We offer Air Conditioning Service and repair, Transmission Services and flushes, Differential Services, Radiator Service, repair and flushes, Tire Rotations, Brake Service and Repair, Computer Tire Balancing,  CHECK ENGINE or Service Engine Soon light diagnosis, Timing Belts, Water pumps, Fuel Pumps and filters and much more.

We also offer Texas Motor Vehicle State Inspections on all 1996 and newer vehicles with OBD II, Motorcycles and vehicles that are 24 years old or older including all Diesels.

We are conveniently located in the building accross the street from University Lanes Bowling Alley, Just one block east from Texas Womans University on University Drive at the corner of Rudell next door to Chevron.


Stop by for dependable automotive services 

  • Oil Changes
  • Tire Rotations
  • Computer Tire Balance
  • Computer Diagnostics
  • State Inspections
  • Spark Plug Replacement 
  • Wiper Blades
  • Engine Repairs
  • Starter and Alternator Repairs at competitive prices


  • Transmission Service
  • Radiator Replacement
  • Air-Conditioning Service & Repair
  • Brake Jobs
  • Batteries
  • Belts
  • Timing Belts
  • Cooling system flush
  • Hose Replacement


At Duffy's Auto Service, we are ASE-certified, and members of O'Reilly's Certified Auto Repair Warranty Program and our repairs are backed by a 12 month 12 thousand mile nationwide warranty.

Our shop is owned and opperated by Bryan Russell, a former service technician of Classic Chevrolet™ in Grapevine, Texas, who can help you understand your vehicle's needs. 


Broken Down Car - Contact us or stop by our Denton, Texas, car repair shop and let our certified technicians give you the automotive services you need!

Receive $8.00 Off Your Oil Change
When You Mention Our Website

Offer applys to new customers only

  Regular price is $37.95 for a full service oil change, includes up to five quarts of Mobil 5w30 motor oil. 

  Regular price for bottled oil is $39.95 and up, includes up to five quarts of bottle oil, limited to stock on hand.

  Synthetic oil is $89.95 includes up to five quarts of Mobil One Synthetic Motor Oil.


Contact us or stop by our Denton, Texas, Auto Repair Shop and let our certified technicians give you the automotive services your vehicles need!

Proudly Serving:

Denton, Argyle, Corinth, Lewisville, Krum, Crossroads, Ponder and Sanger Areas




Hours of Operation
Monday–Friday,  7:45 a.m.–5:00 p.m.
Saturday-Sunday, CLOSED

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