Denver's shop for fleets, transmissions, and classic cars since 1970.
Family-owned, three generations of mechanics, in-house rebuilds. Light and medium-duty fleet specialty, transmission service, classic car restoration, and everyday auto repair across north Denver.
What Don's Garage specializes in.
Three areas where Don's Garage stands out in Denver. Fleet maintenance for businesses running 5+ vehicles. Transmission specialty going back to 1970. Classic car service done right. Each one starts with an honest conversation.
Engine, transmission, brakes, suspension — plus classic-car specialty work most modern shops won't touch.
Engine Repair & Replacement
Diagnostic-first. We'll tell you whether it needs fixing or replacing.
Transmission Rebuild, Repair & Service
It's in the shop name. We've been doing this since 1970.
Full Tune-Up Service
The maintenance most shops skip — done the way it should be.
Classic Cars
Pre-2001 vehicles. Pre-war through the '90s. We work on what we grew up on.
Frequently asked questions.
Quick answers to what people ask most about Don's Garage. For deeper info, check our resources or call the shop.
Where is Don's Garage Automotive and Transmission located?
Don's Garage is at 5515 Washington Street in Denver, Colorado, 80216. We're in the I-70/I-25 industrial corridor, minutes from Globeville, Elyria-Swansea, Cole, and Commerce City.
What hours is Don's Garage open?
Monday through Thursday, 8:00 AM to 5:00 PM. Friday, 8:00 AM to 3:00 PM. Closed Saturday and Sunday. Call (303) 295-2448 to schedule.
How long has Don's Garage been in business?
Don's Garage has been family-owned in Denver since 1970. Three generations of mechanics, transmission specialty since the start.
Does Don's Garage work on fleet vehicles?
Yes — fleet maintenance is one of Don's specialties. We service light and medium-duty fleet vehicles including vans, work trucks, and service vehicles. We also offer a free fleet health audit for businesses considering Don's as a service provider. See our fleet services for more.
Does Don's Garage rebuild transmissions?
Yes — transmission rebuilds are Don's longest-running specialty. We rebuild in-house, three generations deep, covering automatic and manual transmissions across most fleet, retail, and classic vehicle platforms. See our transmission service for details.
Does Don's Garage work on classic cars?
Yes — classic car service is one of our three specialties. We work on pre-2001 vehicles, from pre-war classics through the 1990s. Manual transmissions, carb tuning, body-on-frame suspension, period-correct service. See our classic car service.
What service areas does Don's Garage cover?
Don's Garage primarily serves north Denver, including Globeville, Elyria-Swansea, Cole, and Commerce City. We also serve customers across Lakewood, Arvada, Wheat Ridge, Westminster, Englewood, and Golden. See our coverage details.
Does Don's Garage offer warranties on repairs?
Yes — Don's offers warranties on transmission rebuilds and most major repair work. Specific warranty terms vary by service. Call (303) 295-2448 to discuss the warranty for your specific repair.
Serving the Denver metro.
If you can get to us, we can fix it. Tow available if it isn't driveable.
Read reviews from real Denver customers.
Live reviews integration is coming online. In the meantime, read what customers say on Don's Google Business Profile, or share your own experience.
Bring it in. We'll tell you straight.
Real diagnostics, honest call between rebuild and replace, no sold work that doesn't need doing. That's the whole pitch.