Snooty place. They too good to work on stuff that they consider too hard. If you need to pay too much for bolt on service this is your place. If you need real technicians. Go somewhere else.

No fluff. Piece of mind job was done correctly and no surprises after you leave.

Very knowledgeable about the Dodge Cummins trucks.

Amazing Job!! Highly recommended!!Friendly staff, Knowledgable. Great customer service, Left Coast Diesel went above and beyond Fixing my 2004 Diesel Dodge Cummins. Thank you

Very professional and very courteous also very knowledgeable and fairly priced I called to ask some questions about my transmission for my truck and talk to the owner which is a very polite man schedule an appointment and Im going to be dropping it off I will update after I get my truck back but just based on how he conducted himself over the phone and the knowledge that he had of my truck and the problem I have no doubt in my mind but this is a good reputable business and I cant wait to get my truck back

New diesel owner with lots of questions. LCD is super helpful, took care of what needed immediate attention and didn’t try to oversell aftermarket upgrades. Truck has been amazing post visit on a 3k mike road trip pulling a camper. Very happy with the work and service.

Left coast found the problems with my fuel pumps when other auto services couldnt. After the repair during my 2000 mile trip a check engine fault came on. When I returned Left Coast found the problem and fixed it for no charge. It was a difficult error to resolve. They stand behind their work.

Great service and great staff

We have been to 2 different Ford dealers as well as 2 independent shops to inquire about a loud hissing noise during acceleration or strain on the turbo / motor. Each told us the upgraded turbo is just loud, and not to worry about it. Left Coast Diesel, had our rig for less than 4 hours and was able to ascertain our the current intercooler had a crack in it. New improved aluminium intercooler installed, hissing noise gone! We could not be happier, thank you WCD!

Terrible customer service. They will not be honest with you about the repairs needed. I would not recommend this place to my worse enemy.

Friendly good service. Best diesel shop in the Nor Cal area. Can do it all. Maintain or replace. Repair and diagnose. Been going there since they were WinSpeed many many years ago.

Blown clamp to intercooler hose. Quick diagnosis and turn around time, on top of that inspected everything else for any other damage. Great service and work.

These guys are great! They did a transmission service on my transmission that has 333,000 miles on it and it shifts smoother than it did new 11 years ago. I take my truck there because they use quality parts for oil changes to anything else you need done!!! Great team!!!

Great place to take your diesel, they speacilize in diesel pick ups, aftermarket and stock. Great xustomer service

Good mechanics, honest and on time. Thanks

Quickly diagnosed my trucks problem, fixed it for the estimate given.

Awesome repair shop. Robert is fair with pricing and all techs ate very knowledgeable. Only place to take my diesel as far as Im concerned.

Very Helpful People - I highly recommend them!

Used to be a good shop. Last 3 times I made an appointment, I was told to come back the next day only to come back and be told they were too busy. I’ll spend my money elsewhere.

Took the time to ck my 6ltr & cost 4 a bullet-proof repair.

What a let down! They came highly recommended and I had heard nothing but good things. I chose them over a shop that has done great work for me that is located in Martinez.The turbo on my truck went out and it has been twelve days. They have had the turbo in hand for six days. I have been told that the truck would be ready three times and they have yet to deliver it. I have not received a single phone call from them. I have called them every time. I am writing this review while I wait for Left Coast Diesel to call me. I have a feeling its not gonna happen today... AGAIN!!!Take your truck here if you want to be put off, lied to and you can wait a month for a ten hour fix.

These guys are great - really knowledgeable and can usually turn repair work around really quick. Definitely recommend them if you really care about your truck.

They did great work on my truck, I tried for a week to get in touch with them. They dont answer the phone if you leave a voice mail they dont call back. Not sure whats changed but customer service isnt to good.

These guys know what theyre doing and communicate well. Always nice to see a small business take care of their customers. Highly recommend.

My 2009 GMC Sierra 2500 with 363k miles had an odd high pitch sound when accelerating. I was conerned it could be transmission related $$$$. After seeking out advise from Preformance Auto where I take my gas vehicles, my tech recommend Left Coast Diesel. Fearful it was going to be an expensive fix I took it over there and met Robert. This guy was awesome he listened my concerns we took the truck for a test drive. He immediately thought it was exhaust related, after retuning back the shop one of us guys check under and sure enough it was an exhaust gasket, a $247 repair. Schedule an appointment for repairs and was fixed quickly, they even checked out all the hangers an repaired these too. Glad I have a trustworthy diesel mechanic!D Gardner, Martinez

Top notch diesel mechanics, get her done here!

July 2018 don’t remember day But I walked in to ask How much was to change the EGR valve on a 2008 Ford 250 6.4, The guy told me if everything was smooth without any complication it was about $1500 because he said it was like 4 to 6 hours labor plus the part $160 an hou The guy told me if everything was smooth without any complication it was about $1500 because he said it was like 4 to 6 hours labor plus the part. They charge $160 an hour, I looked at him in the eye and say are you serious 4 to 6 hours to replace the EGR valve which is on the top of the engine?!!!! He went like, “wall, haaaaa is a lot of work but let me check what the computer said how much time “ So he went to check his computer and he’s like oh the computer said is two hours.So He was putting 4 more hours than he supposed too.Basically he was planning to still my money!!!!Anywhere you take your car diesel or gasoline. Take my advice, do some research on your own online before taking them to a shop So this crocs cannot fool you

Amazing craftsman...

Great service

These guys know their stuff Id trust them with my vehicles for any modifications expcially electrical and stereo work.

Pro diesel mechanics

Theyve earned my trust to do it right!