Fantastic and Honest mechanic. Had a problem while traveling. Stopped at the KOA campground and was…read morereferred to this place. A nice and friendly staff did a great job

From the owner: Our combined experience of 32 years plus gives us all the top knotch decision making when it comes…read moreto your auto repairs and needs. Located in Spearfish South Dakota on West Fairground Loop we service all your vehicles.. ASC Master Technicians wL1. Foreign and Domesticbr.Light Truck Dieselbr.Electronic Engine ControlsCall us for your auto needs, let us help you when it comes to your vehicle.

Came to my home to figure out why my SUV wouldn't start. Then came back with a new battery!!!…read moreAwesome service!!! Terry and his people are amazing!!!! Thank you!!!!

Great repair shop with great people! Gets you in and out quickly and very courteous. And…read moreaffordable! Highly recommend!

Not good I would go somewhere else. Booked appointment and left car and they refused to perform…read morebrake service because my car was dirty, really? Maybe this guy has OCD.

Highly DONT recommend. He's discriminating my family and said " he wont work on our truck after…read moreother shops touch it" ( nobody has touched our truck since we bought it) he's always been very rude to my family. wish I could give him a 0 star

We are from out of state "Calif" our car broke down in South Dakota during the Sturgis rally,…read moreluckily we had our Harley! I had the Chrysler towed to a dealership with no help! They recommended a dealership in Spearfish SD. I delivered it there, 3 days later I received a call to let us know they don't have the time to even look at it! Then thank God we found "Motor Service" these guys are the best! Had our car one day... FIXED! Cooling Fans shorted out.

Let's face it. You NEVER want to have to take your car to the shop for an auto repair. But when you…read moredo, I recommend this place. They know what they're doing and do a great job with great service. Sometimes they get busy, so if it's something that can wait, call ahead and make an appointment.

So had an outstanding experience today. I'm in a rental car with 35 series tires there was a…read moregrocery cart on the freeway yesterday and I drove around it on the shoulder. Had a slow leak and didn't have a spare tire. This place was literally a quarter of a mile from the hotel. I got there at 7:15, they let me in about 7:50 when they opened. Garek greeted me got me signed in and taken care of in about five minutes. They pulled the wheel tire put a patch on the inside pulled out a broken quarter inch drillbit that punctured the center tread of the tire. Remounted it rebalanced it, checked all the pressure and all the tires and sent me on my way. No charge. This was a Rental Car and I was on vacation so it wasn't their fault they could've easily charged me and probably should have but the fact they didn't says a lot. Can't recommend these folks enough. The car likely drives better now than it did when I picked it up from Hertz in Rapid City. You need tires or tire service check out the folks at Les Schwab. Thank you to their entire crew for getting me straightened out quickly.

Can't leave enough stars for all the people that work here. The manager Dewayne is amazing and…read moresuper helpful and has alot of knowledge in his field. Thank, you all for your help and for getting us back on the road. ​

I was staying for a week in Spearfish and my check engine light came on at the end of the week…read more Tyler at Northern Hills Diesel helped me diagnose the problem and produce a solution. He was personable, helpful, and knowledgeable about my problem. In fact, he was working on the same problem for another truck in the shop. I highly recommend Northern Hills Diesel!

A big thank you to this shop for fitting me into the busy schedule. Ashley and Cody had top…read morenotch customer service and went the extra mile to think outside the box to get the job done and get my truck back in action. If you have any light duty diesel truck work or repair I would not hesitate to call these people.

I filled up with gas and would use them quite often. I needed an oil change. They could get me in…read moreright away. When presented with the bill, they told me they had to add an additional half quart to my Mercury auto which usually takes 5 quarts. Their charge was an additional $4.48 for the half quart. Total bill for oil change for my car was $60.42. I am 75 and have had multiple oil changes in my lifetime, but have never paid over $50+tax. Cannot recommend and will never use their service again.

Spent the day touring Deadwood and discovered I had a tire with a slow leak that needed to be…read morerepaired at 5:40pm Monday. I called everyone within 10 miles of Deadwood, SD that was open and no one but the young man at Williams 66 in Spearfish would agree to stay open and plug my tire. Thank you for the excellent customer service from a desperate tourist.

While on a memorial drive, of sorts, to take my father's '63 Mercury from Iowa to Seattle, the…read moreexhaust hangers broke and dropped the muffler on our way into Spearfish. We stopped into Exhaust Pros to see if they might be able to squeeze us in, but they were fully booked and all their lifts were actively being used. They went above and beyond to find a shop that could get us in and that they felt they could recommend. They did not have to help, but they did and I am sure they would have done a great job if they had been able to.

Absolutely wonderful service every time. A very thorough and fair place to get your vehicle in top…read moreshape, service is proactive and kind. On one occasion, I sent my parents who were in from out of town to have a few items checked and mechanics were patient, accommodating and recommended no needed fixes after looking over their concerns. On another occasion, they fixed an issue we had been to two other shops on, and finally got the problem diagnosed and corrected. These guys are smart and honest. We are grateful to have them to go to!

The BEST in the Hills. Polite and Humble. Excellent work.read more

My wife and I are from California. We came to Dakota V-Twin with the cams, oil pump, and related…read moreparts from my wife's bike in a box the Saturday before Rally week started. A dealer in Wyoming took it apart because of valve train noise, but found nothing wrong. Dakota V-Twin put it back together for us, fixed the noise it was originally torn down to find, and charged us one third of the dealer's quote even though their tech worked on it until 9:30 on Sunday night to finish it so my wife could ride the Black Hills! This kind of service and dedication are unheard of! I can't speak highly enough of Dakota V-Twin, and highly recommend them to anyone who needs parts, service, or repairs. You'll never find better folks when you're on the road! Buckshot & Reggie; Thunder Press