Trusted Services With NO Surprises

David Marks, owner and founder of Quality Auto STL, is an ASE Certified Master Technician and a top expert in Pre-Owned Car Sales in the St. Louis area. David Marks is a graduate of Ranken Technical College with over 2 decades of extensive hands-on training in the industry. David has worked as an automotive technician servicing and maintaining light trucks and cars since 1999. Through his career, David has worked for various types of vehicle repair facilities, from major dealers to independent shops, while also growing his extensive knowledge in part sales. This valuable experience allows David to provide the best quality service for all of your auto needs.

Every 3,000 miles

Change oil, lube chassis, check fluids

Every 6,000 miles

Rotate tires

Every 12,000 miles

Replace wiper blades

Every 15,000 miles

Inspect brakes, steering & suspension, inspect or replace air filter & cabin filter

Every 30,000 miles

Change transmission/differential fluids; replace belts & hoses, fuel filter

Every 50,000 miles

Replace shocks/struts

For maintenance information specific to your vehicle, please check your vehicle owner’s manual for manufacturer’s recommended maintenance schedule.

*Call for additional information.


*Free estimate excludes ABS, A/C, and drivability diagnostics. If diagnosis requires any disassembly charges may apply.


An axle is a central shaft for a rotating wheel or gear.

Ball Joints

Ball Joints are spherical bearings that connect the control arms to the steering knuckles.

Shocks and Struts

Shocks and Struts keep your car from bouncing. Even though they do the same thing, shocks and struts are completely different parts.

Wheel and Hub bearings

Wheel Bearings allow the wheels to rotate with minimal friction while supporting the vehicle’s weight.

Tie Rods

Attaches steering system to wheel.

Check engine light diagnostics

Inform vehicle owner that emission system has a problem.

Belt and hose replacements

Belt operates different engine accessories Hose allow coolant to flow through engine.

Water pumps

Circulates coolant thought the engine.

Fuel pumps

Delivers fuel to the engine.


Dissipates heat in coolant created from engine running.


Keep engine at operating temperature.

Power steering pumps & hoses

Gives driver ability to steering car without effort.


Turn Signal-Power Windows/Locks-Windshield Wipers, Alternator.

Wheel Alignments

Improve handing and tire wear.

Rotate & Balance

Increases the life of your tires.

Road Hazard & Flat Repair

If the tire can be repaired we are on it.

Quality Auto STL is your local Independent Tire Dealer



Replacing oil pan gasket on a 2002 Saturn SL1.


The Starter

Replacing a stater motor, driver front axle, & oxygen sensor in 2002 Hyundai Elantra.


Intake Manifold

Replacing lower intake manifold gasket on a 2000 Ford Explorer.


Water Pump

Replacing a water pump on a 2001 Dodge Neon.



Got the new timing chains, guides, and tensioners installed on 2006 Cadillac CTS. Time to put rest this engine back together!


Valve Cover Gasket

Replacing valve cover gasket, it was leaking oil onto the spark plugs. Also replacing spark plugs, plugs wires, thermostat, and flushing cooling system on a 2002 Kia Rio.


Water Pump

Replacing a water pump on a 2002 Saturn SL1.


Leaking Valve Cover Gasket

Replacing leaking valve cover gasket on a 2002 Mazda 626. This car was leaking oil on the exhaust. Thus after the car was driven, the driver would smell burnt oil.


Timing Belt

We are currently working on replacing a timing belt on a 2000 Saturn. Did you know that a timing belt is something that you should replace as part of regular maintenance with your vehicle, as failing to do so can cause major damage to your car's engine. Please feel free to contact us about any questions related to the timing belt of your vehicle.


Whats The Dignosis Doc?

Call and schedule an appointment today!


Whats The Dignosis Doc?

Call and schedule an appointment today!


Rear Axle

Replacing rear axle seals and rear brakes on a 1995 Chevy One Ton Van.


Almost 900 Million Oil Changes are completed Each Year


Antilock Brakes Were Invented Over 50 Years Ago


Your Car Uses 6 Primary Fluids


The first car radio was invented in 1929


Fuel Injection Service


Air Induction Service




Quick Car Check In

Quality Auto STL, Moves To Wesport With Help From Hilliker Corp

Quality Auto STL, Built on Foundation of Helping Veterans, Finds Commercial Rental Space in Westport.
David Marks founded Quality Auto STL in 2010. Having worked in the industry since 1999, he jokes he bought a “garage with a house in front of it” to build a business that has gone from a part-time venture to a full-time, profitable career—one set for expansion.

Send Us A Message

To receive a free estimate*, please fill out the form below. In the comment section include year, make, and model of your vehicle and a brief description of the problem you are experiencing.

*Free estimate excludes check engine diagnostics, electrical diagnostics, and air conditioning