Complete Auto Service Denver · 1400 Ulster St
Inside the Complete Auto Service shop bay — a car on the lift with the hood up in warm daylight

Denver · 1400 Ulster St

Honest auto repair in Denver —
we explain before we fix.

Tired of the guessing games? We diagnose the real problem, show you what’s going on, and talk it through before we touch a wrench — so you know exactly what you’re paying for, and why.

(720) 755-0481
4.9 on Google · 90 reviews Free estimates · Open 7 days
Rating 4.9 ★ · 90 reviews
Hours Open 7 days · 9–7
Estimates Free · before any work
The rule We ask before extra work

We don’t guess. We diagnose it, price it, and only then pick up a wrench.

A technician checking a car with a diagnostic scan tool in the shop

The shop

Most people don’t distrust the bill.
They distrust not knowing.

We started Complete Auto Service on a simple idea: most people don't distrust mechanics because of the repair bill — they distrust them because nobody explains what's actually wrong. So that's what we do differently. We take the time to walk you through what your car needs, send photo updates when it helps, and never add on work you didn't ask about without checking with you first. Fair pricing, straight answers, and a car that runs right when you drive it off the lot. That's the whole job.

  • We explain the problem before we fix it
  • Photo updates and honest, fair pricing
  • We ask before doing any extra work
  • A car that runs right when you drive off

“Henok is fantastic. Was super helpful and offered great pricing for quality work. Helped me find a vacuum leak I could not track down. Replaced both CV axles on my truck in a weekend when I know it was more work than expected with a rusty truck. I will always come back to him for car needs. Being super friendly and honest makes it even better. Could not recommend enough.”

— Bryce Taylor, Denver, CO

How a visit actually goes

No surprises. That’s the whole idea.

  1. 01

    You tell us what it’s doing

    Call or book and describe the noise, the light, the feeling. We listen — no pressure, no upsell script.

  2. 02

    We diagnose and call you with the price

    We find the real cause, explain it in plain English, and send photo updates when they help — before a single wrench turns.

  3. 03

    We fix only what you approved

    You okay the work and the price up front. Spot something else along the way? We call and ask you first. Never a surprise on the invoice.

Know before you bring it in

What you’re noticing — and what it usually means.

You don’t need to be a mechanic to describe the problem. Here’s the plain-English version of what we hear most. Recognize one? Give us a call and we’ll tell you straight.

  • Grinding or squealing when you brake Usually worn pads — cheap now, expensive if it reaches the rotors.
  • A check-engine light you’ve been ignoring Could be a loose cap or a real fault. We read the codes and test the system.
  • Temperature gauge creeping up Cooling-system trouble gets worse fast — worth looking at before a long drive.
  • Clicking on turns or a vibration Often a CV axle or a suspension joint. We pin down which one.
  • Rough idle or hesitation Vacuum leak, sensor, ignition — a scan narrows it down quickly.
  • The car pulls to one side Alignment, tire, or brake. A quick check tells us which.
Talk it through — (720) 755-0481
A technician looking over an engine in the daylight shop bay
No pressure · we tell you straight

Why Denver drivers come back

4.9

90 Google reviews · Denver, CO

Read them on Google
Routine maintenance underway in the shop, warm daylight
  • “Henok is a great mechanic. Fixed my 2015 Jeep Grand Cherokee overheating issues. He found another big issue while fixing it and asked me before fixing that too. He sent me picture updates, which is amazing. He makes sure your car is running smoothly before handing it back over. I'll be bringing my other cars here as well.”

    Anthony Misciasci · Denver, CO

  • “Henok is fantastic. Was super helpful and offered great pricing for quality work. Helped me find a vacuum leak I could not track down. Replaced both CV axles on my truck in a weekend when I know it was more work than expected with a rusty truck. I will always come back to him for car needs. Being super friendly and honest makes it even better. Could not recommend enough.”

    Bryce Taylor · Denver, CO

  • “Henok was extremely professional and knowledgeable, was able to help me out same day at such a great price. He's the best.”

    Jake Lammert · Denver, CO

  • “Henok repaired and painted scratches on my bumpers and I'm very happy with the result. Great work, great pricing and fast, pleasant service. Would definitely recommend!”

    Geordie McEachern · Denver, CO

Visit the shop

On Ulster St, serving Denver & the Front Range.

You’ll find us at 1400 Ulster St, Denver, CO 80220. We’re open every day of the week — call ahead and we’ll do our best to get you in, often same day.

  • 1400 Ulster St, Denver, CO 80220
  • (720) 755-0481
  • Monday – Sunday · 9:00 AM – 7:00 PM
Directions

Straight answers

Questions, answered.

The stuff people ask before they bring a car in. Anything else, just call — Henok picks up.

(720) 755-0481
Will you explain what's wrong before you fix it?

Always. We diagnose the real problem, walk you through what we found, and give you an estimate before we start any repair. If we spot something else along the way, we call and ask you first — no surprise charges.

What are your hours?

We're open every day of the week, Monday through Sunday, from 9:00 AM to 7:00 PM. Give us a call at (720) 755-0481 to set up a time.

Where are you located?

We're at 1400 Ulster St in Denver, CO 80220, serving Denver and the surrounding Front Range.

Can you get me in the same day?

Often, yes — depending on the issue and our schedule that day. Call us at (720) 755-0481 and we'll do our best to get you back on the road quickly.

Do you offer a free estimate?

Yes. Call us to talk through what's going on with your car and we'll give you a straight estimate before any work begins.

What kinds of repairs do you handle?

A wide range — check-engine diagnostics, brakes, engine and cooling issues, CV axles and suspension, routine maintenance and oil changes, plus scratch and bumper paint repair. If you're not sure whether we cover it, just ask.

Book a visit

Tell us what your car’s doing.
We’ll take it from there.

Send a few details and we’ll get back to you fast with the next step — or skip the form and call the shop directly. Either way, you’ll get a straight answer and a free estimate before any work.

(720) 755-0481
4.9 ★ · 90 reviews · Open 7 days · Free estimates

Request a visit

Call the shop (720) 755-0481

Schedule service

Online scheduling lives right here at launch.

This is a preview, so the calendar isn't wired up yet. On the live site, this button books straight into the scheduling system the shop already runs — Shopmonkey, Tekmetric, AutoLeap, or whatever's at their front desk — and if they don't have one yet, we set it up with them.

Until then, the fastest way to grab a time is a quick call — Henok picks up.

🚀 Make it official Launch this site — from $99/mo