National Automotive

4733 Clinton Hwy
Knoxville, Tennessee 37912

865-687-6061

Store Hours

Monday - Friday: 8:00am to 5:00pm
Saturday & Sunday: Closed

About this location

Services at National Automotive

Whether you know exactly what you need, or just know you need service, we’ve got the tools and know-how to diagnose your vehicle from tire to tailpipe.

Alignment

We adjust your vehicle’s suspension to ensure your wheels are properly aligned for safer handling and longer tire life.

Battery

We test, replace, and service your battery to ensure reliable starting and electrical performance.

Brakes

We inspect and repair your brake system to ensure confident stopping power and safe driving.

Diesel

We provide specialized diagnostics and repairs designed specifically for diesel engines and performance systems.

Euro

We offer expert maintenance and repair for European vehicles using specialized diagnostics and OEM-quality parts.

Heating & AC

We diagnose and repair heating and air conditioning systems to keep your cabin comfortable year-round.

Oil Change

We change your oil and filter with the right products to protect your engine and extend its life.

Tire Balance

We balance your tires to eliminate vibrations and promote even tread wear for a smoother ride.

Tire Repair

We safely repair punctured tires to get you back on the road quickly and confidently.

Tire Rotation

We rotate your tires to ensure even wear and extend their lifespan.

Tires

We offer a full range of tires and professional installation for every vehicle and driving need.

Our OffersSave more on the services your vehicle needs.

ALIGNMENT Special
20% OFF
20% OFF

ANY ALIGNMENT

Expires March 31, 2026

Limit to one coupon per customer. Cannot be combined with other offers. Not eligible for use at Main Street Auto Express Oil locations. See Store for Details. Coupon code: OFFALIGN
Oil Change Offer
$25 OFF
$25 OFF

any oil change

Expires March 31, 2026

Limit to one coupon per customer. Cannot be combined with other offers. Not eligible for use at Main Street Auto Express Oil locations. See Store for Details. Coupon code: OIL25
Repair Offer
15% OFF
15% OFF

any Brake or Suspension Job over $150

Expires March 31, 2026

Limit to one coupon per customer. Cannot be combined with other offers. Not eligible for use at Main Street Auto Express Oil locations. See Store for Details. Coupon code: BRAKE15

Our Promise to You!

We are proud to provide the best service possible and our goal is that every customer leaves happy and shares their experience with others.

Second Opinion

Bring in a competitor's estimate for a second opinion. Receive 10% off labor when you bring in a competitor's estimate.

Free Tire Check

Free tire pressure check and air refills with every service.

Financing

Service Now, Pay Later with financing options from Synchrony.

What our customers are saying...

Pamela V.
National is the only place that we can take our F-250s to and have it done right. We have tried other tire shops and they either completely shred the lug nuts or put one directional tires on the wrong way. We will continue to use them!
Luz M.
I’m bringing my car to the same place for over 8 years and I never have to complain about the service on my car. They were very honest with me and great friendly service.
Caroline Placidi De B.
I had a great experience getting my car repaired here. The staff was professional, honest, and efficient. They explained everything clearly and the work was done on time. My car is running perfectly now. Highly recommend!
Monica C.
They inspect the car very well and repair it quickly.
Mike J.
Very helpful
Response from the owner:Thank you for the 5-star review. We look forward to serving you in the future!
Ben P.
Great guys great service they went above and beyond
Taylor F.
Great service and HONEST. They fixed my brakes and oil plug in and out in an hour. Will take my vehicles here from now on!
Grey Matter T.
Jerry and his crew are great guys that do their best to get you taken care of! Go by for all your car care needs.
Terah H
These folks are absolutely amazing! You can tell they are just genuinely good people and they do all they can to help you. I will be using them in the future!
Scott B.
Very helpful and even took me home and picked me back up. You don’t get that kind of service these days. Would recommend!
John M M.
I'm a regular there and there's a good reason
James S.
They were quick to fix my tire. I was in and out in 20 minutes.
Response from the owner:James, thanks for the great review! Glad we could get your tire fixed and have you back on the road in no time. We appreciate you stopping by!
John H
Good service
Response from the owner:Thank you, John! We really appreciate your support and are glad you were happy with the service!
Ali I.
It’s good service we do
Response from the owner:Thank you, Ali! We appreciate your support and are glad you were happy with the service. Looking forward to seeing you again!
Lori B.
Always get in quickly..All questions answered..never made to feel the questions are stupid. I VERY much appreciate the respect everyone at National always shows their customers.
Response from the owner:Lori, thank you so much for the kind words! We’re really glad you feel respected and heard—our team works hard to create that kind of experience for every customer.
Matt S.
Great guys and great service. Quick quality work.
Bob F.
I have been overly impressed with National Automotive and especially dealing with Joe. I can recommend him for all your service needs!
Response from the owner:Bob, thank you so much for the kind words! We're really glad Joe took great care of you. We appreciate the recommendation and look forward to seeing you again!
John T.
I was able to speak with Joe who helped walk me through understanding the tire and the tread life and the different brands. Highly recommend!
Response from the owner:John, thank you for the kind words! Glad Joe was able to walk you through everything—appreciate the recommendation and hope to see you again!
Paula O.
I’ve been using this business for several years and have been beyond pleased with every visit.
Response from the owner:Paula, thank you so much for your continued support over the years! We're grateful to have customers like you and always look forward to seeing you.
Wendy G.
A great experience for an oil change. Service, the customer service rep and the oil change itself were awesome!
kent L.
This is the only shop I use. Excellent and fast. service
Steve R.
I work nearby. I've taken my car in there a couple of times in recent years for tire repair. Each time they've been fast, and kept me informed the whole time. Their repair time estimates are reasonable. So are their prices. A good shop with good people working there.
Pamela B.
Everyone was so helpful! Had excellent service!
Brandi
Same day car was fixed! Alternator serpentine belt and struts! They showed me what was wrong with my car with pictures and upon request they let me back there and let me see that you spoke to me as if I understood which I really appreciate they listen they had empathy they kept it real Dakota Zack and forgot his name smart AC guy