Small shop. They have been honest and fair with every encounter. They are good with communication…read morewhether via email or phone. If you want to avoid a credit card fee, bring cash to pay for your transaction.

The owner went above and beyond the Call of Duty® made sure that my car was fixed right…read more unfortunately Summers did not do a good !!! job after 25 years going there charge me 600. And wanted 1400 more after they broke my air conditioner hose. 1996. Mustang Rocky Mountain auto. made everything right found the problem. Re-ordered the parts and fixed everything I will go to them from now on for all my cars. Mary Ellen Hairdesign

Great Servi e and excellent work on both of my classic cars. Thanks for everything. Bud. Cheyenne…read more Wyo.i g

Great service, honest assessments. Worked to get my car fixed at the best price possible…read more Customer for life!

I always take my car here. When I first moved to Greeley I had a very difficult time finding a…read morereliable mechanic. Everyone I found was overpriced and could not fix my car in what I felt was a timely manner. I am a delivery driver, so it is imperative that I have my vehicle in good running condition and available at all times. Not only is Greg a great mechanic providing excellent customer service, he is also understanding of my situation. If you are someone like me who needs their car promptly without breaking the bank then this is the place for you!

I first started going there about 20 years ago. I was at Weld county garage And they told me my…read moretransmission was bad took it to Greg for a 2nd opinion when i returned he had fixed the problem. He stated it was a minor problem so it fixed it on the spot. WCG wanted 3 thousand to repair my truck he repaired it for 40 bucks been going there for 20 years and he has always been fair and always stood behind his work. He guarantees his work . He has worked on every car and truck I've had in the last 20 years. Greg is honest and fair. I will never trust anyone else.

Fantastic service, a lifesaver! We had literally just pulled into town (helping someone move here…read morefrom California) when we heard a loud short grinding and lost power, even though the engine sounded fine. I immediately thought it was the transmission. I called another place but they were already overbooked, and suggested we try Bernie at Best Western. Bernie was very optimistic that they could help. We had the car towed there the next morning, and had a diagnosis that afternoon. (It turned out to be the CV joint and axle.) The car was fixed and ready to go the following day. The price was great and we were on our way again back to CA. I can't say enough about how friendly and efficient they were, this shop gets my highest praise!

This is a great local business and I highly recommend them!…read more My best friend had her transmission fixed here and told me about them. I took mine in and they had excellent customer service. I was even able to get a rental car for special rates while they worked on my car for two days. I just picked it up and it runs great, it shifts (I have a standard) like new. The price was great and Bernie was friendly and professional. I am very satisfied with the work and happy that my friend sent me here- it was way more afforable than the dealer would have cost me.

They ripped me off. They rebuilt my f350 e40d and now it's worse than before and they will not…read morehonor the warranty. Do not do business with thses scammers!!!!

Guys is a scam artist. After three attempts to rebuilt a th400 for me he stopped replying. Took…read moremonths to get each one repaired and the trans I took him in the first place worked better than all three. Stay away.

Would not ship my car back to me, without me agreeing to an extra last minute agreement…read more Transmission lost fluid on trip back to California. Transmission had to be redone. Returned my truck to me in Unrepaired, Unusable, condition. Last minute agreement included For ME to update my equipment to +$1,200. dodge OME only cooling for transmission. In order for my transmission warranty to be valid, must be under these NEW Terms. Not happy, or satisfied with communication and service. All kinds of excuses for their failures. Illegal last minute, contract to document change demands, or my truck doesn't ship out. I am not happy with this company. I would not recommend this company.

Our ancient Outback was in need of another clutch, and I was tired of the work done by our local…read moreSubaru dealer. I brought the car here for the repair and when I got it back it drove better than it ever had before. Great job. Thank you.

I don't write reviews often, but this experience absolutely deserves one…read more From the moment I walked in, the customer service was exceptional--kind, professional, and genuinely respectful. I never once felt talked down to or rushed, which can honestly be rare in automotive situations. What impressed me most was how clearly they explained everything. They took the time to walk me through what was going on, what my options were, and what actually needed to be done (without trying to upsell anything unnecessary). That level of transparency builds immediate trust. They got me in and out exactly when they said they would, and the pricing was more than fair for the quality of service. If you're someone who wants to feel confident you're being treated honestly and respectfully--this is the place. I'll absolutely be coming back and recommending them to others.

Wow, an honest and fair vehicle mechanic, such a rare thing these days. Try them out. Highly…read morerecommended.

Once again this shop proves it's the best most honest transmission shop in the area. They did fix…read morea leak on my Corvette a couple years ago but I was suspecting another leak, they got it in quickly and told me, nothing wrong and - no charge for the inspection and running diagnostics! They also gave me the trouble codes and good advice that it was probably engine oil and maybe the leak was the cause of an engine misfire - I'd seen that code myself having run my own diagnostic but hadn't tied it to a possible internal engine oil leak. Thanks guys! I tried to bring a friend's 2013 Ford Focus here recently for tranny work after Ford quoted $2k to repair their badly designed mess of a tranny (lots of recalls), but unfortunately the shop told me, that's a 'Ford only' fix. Bummer. So the friend had Ford fix it and on the drive away from Larry Miller Ford - the problem remained. Back it went and there it sits. Trust these pros if you need transmission help.

Brought my fiancés vehicle in to get worked on. David helped me with all my service needs quickly,…read morewould definitely recommend this place for fast service! 5/5 stars!

My car was making a terrible noise whenever I turned. I took it to Straight Line, and they were…read moreable to get it in right away, find the issue, and fix it quickly. Not only did they take care of the problem, but they also didn't try to upsell me or make up issues just because I'm a woman. I really appreciated their honesty and professionalism.

From the owner: About Straight Line Auto – Northern Colorado’s Trusted Family Auto Repair Shop…read more Straight Line Auto is a family-owned and operated automotive repair shop in Greeley, Colorado, proudly run by a father-and-son team. As northern Colorado natives, we’ve built strong community ties and believe in keeping local business, local. Our reputation is founded on honesty, reliability, and a true commitment to our neighbors. We understand how important your vehicle is to your daily life, and we treat every car and truck like it’s our own. Whether you need routine maintenance, advanced diagnostics, performance tuning, or complex engine repair, our certified mechanics deliver expert service you can trust. From oil changes to transmission work, Straight Line Auto provides precision workmanship and dependable results—so you can drive with confidence. At Straight Line Auto, our mission goes beyond fixing cars. We care about the people behind the wheel. That’s why we offer fair pricing, fast turnaround times, and a personal touch you won’t find at big chain shops. When you choose us, you’re not just supporting a local business—you’re joining the Straight Line Auto family.

Just wanted to give a shout out to Steve & ASR for putting my mind at ease and taking care of my…read moretruck like it was their own. Steve got me in for an estimate the same day I called ASR and gave a conservative, fair price on the repairs needed on my truck. I had been told by another so-called mechanic that I needed a new transmission & that he had fixed the noise my truck was making. GRATEFULLY, I didn't have him look into the transmission issue, but, unfortunately, a few weeks down the road the noise he supposedly fixed continued after we paid him, he hadn't fixed anything but was happy to take our money. ASR was able to flush my transmission fluid and fill it with new fluid and it runs like a champ! They also discovered the noise & actually fixed it! I will be taking our vehicle vehicles to them from now on.

Steve was extremely helpful and super sweet. Helped me with exactly what I needed and offered to…read morehelp me in the future with any future endeavors that I need. Great auto shop to go to very knowledgeable!