T-21 Auto
The T-21 Auto Services sign inside the shop
Two SUVs raised on the lifts in the T-21 service bay
A diagnostic scanner connected under the hood of a car
T-21 Auto Service lettering with both phone numbers on a rear window
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5.0 · 142 Google reviews

Auto Repair · Diagnostic · Electrical

ASE-certified auto repair in San Francisco.

5.0
Google Rating
142
Reviews
ASE
Certified

We service domestic vehicles.

What We Do

Auto Repair Services

Repair, diagnostic and electrical work on domestic vehicles — honest work, every time.

Check Engine Light

We read the codes and trace the real fault — electrical, sensor or mechanical — before replacing anything.

Tune-Up

Spark plugs, ignition, filters and fluids to bring back power and fuel economy.

Brakes

Pads, rotors, calipers and fluid service — plus a free look at the whole system.

Suspension

Shocks, struts, control arms and bushings — for a car that tracks straight and rides quiet.

Water Pump

Overheating, coolant leaks and pump replacement — caught before it costs you an engine.

Transmission

Fluid service, hard shifting and slipping — diagnosed properly on automatic and manual.

TPMS

Tire pressure sensors read, reset, and replaced when the warning light won’t go out.

Clutch

Slipping, dragging or a pedal that feels wrong — clutch inspection and full replacement.

How It Works

Simple, Start to Finish

Tap a step to see how we get your vehicle back on the road.

Why T-21

Why Customers Trust Us

ASE-certified expertise and a reputation built on honest, reliable work.

ASE-Certified Technicians

Repair, diagnostic and electrical work on domestic vehicles — from a tune-up to a transmission.

Honest, Fair Pricing

Always give good prices on estimates.

— Chris H., Google review

Work You Can Trust

Thank you, Thank you, Thank you Joe and Staff for your work ethics.

— Ryan A., Google review
Inside T-21

Our Shop

A clean, organized, fully-equipped neighborhood garage — take a look inside.

Two SUVs raised on the two-post lifts in the service bay
Two bays working at once — nothing waits around.
A Snap-on diagnostic scanner connected under the hood of a car
Reading live data before we touch a single part.
A rear drum brake opened up for inspection
A rear drum brake opened up and inspected.
A vehicle up on the lift inside the T-21 service bay
Our service bay — a vehicle up on the lift.
Colour-coded gauges used to measure remaining brake pad thickness
Measuring pad life, so you see the number too.
A tread depth gauge being used on a tire
Checking tread depth on every visit.
An SUV on the lift with the hood open, seen up close
Up on the lift, hood open, work underway.
T-21 Auto Service lettering with the address and both phone numbers on a rear window
Our address and both numbers, if you ever lose them.
The T-21 Auto Services sign on the shop wall above the workbench
The T-21 sign and our workbench.
Customer Reviews

What Customers Say

5.0
Rated 5.0 from 142 Google reviews

“Thank you, Thank you, Thank you Joe and Staff for your work ethics.”

— Ryan A.

“Always give good prices on estimates.”

— Chris H.
The T-21 Auto Services sign lit up inside the shop
Honest Work. Fair Prices.

A neighborhood shop you can actually trust with your vehicle.

Visit Us

Location & Hours

Stop by, call ahead, or get directions — we’re in the Bayview neighborhood.

Address
4049 3rd St
San Francisco, CA 94124
Hours
Hours vary — call ahead to confirm.
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Free Estimate

Describe Your Issue — We’ll Call You Back

Tell us a little about what’s going on with your vehicle and we’ll get back to you with next steps. No obligation.

We only use your number to call you back about this estimate.

Need Auto Service?

Call T-21 Auto Services and Repairs today — repair, diagnostic and electrical, at a fair price.

Call (415) 684-6310
Call Now · (415) 684-6310