business image

Left Coast Diesel

Average Score
Overall Rating 4.9/5Overall Rating 4.9/5Overall Rating 4.9/5Overall Rating 4.9/5Overall Rating 4.9/5
4.9
(503 Reviews)
89

Score Details

Last 30 Day Trend

Active Business

ReScore Reviews

ReScore
Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5
Original Review
Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5
0
Total ReScores
-
ReScore Average
89
Net Promoter Score ®

Business Details

About

Welcome to Left Coast Diesel, your northern California Leader in diesel services, repairs and maintenance. Over the last 13 years of quality work our vision and what we are here to achieve for our customers has always been to help keep and make their rig dependable and on the road. In years past, the diesel market was heavily involved Welcome to Left Coast Diesel, your northern California Leader in diesel services, repairs and maintenance. Over the last 13 years of quality work our vision and what we are here to achieve for our customers has always been to help keep and make their rig dependable and on the road. In years past, the diesel market was heavily involved in aftermarket accessories that were build around fuel mileage and more horsepower. While these products offered much immediate gratification on older vehicles, we have seen over time that maxing out many of the factory components(I.E. Turbo and injectors) the truck starts to see repairs sooner than vehicles that have remained stock throughout their lives. ...more

Categories
Diesel Services, Auto Maintenance, Repair Shop
Contact
(925) 682-8088

Business Hours

Mon
8:00 AM - 6:00 PM
Tue
8:00 AM - 6:00 PM
Wed
8:00 AM - 6:00 PM
Thu
8:00 AM - 6:00 PM
Fri
8:00 AM - 6:00 PM
Sat
closed
Sun
closed
* Pacific Time (Us & Canada)
1905 A Arnold Industrial Way Concord, CA 94520
Left Coast Diesel's Reviews
Overall Rating 4.9/5Overall Rating 4.9/5Overall Rating 4.9/5Overall Rating 4.9/5Overall Rating 4.9/5
4.9
(503 Reviews)

TR
Tom R.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
09/02/2025
verified customerVerified Customer
10
Engine replacement on my 2005 F250
Left Coast Diesel fixed my F250 and were very efficient and timely. I would recommend them if you are in need of any assistance.

KC
Keith C.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
08/14/2025
verified customerVerified Customer
10
New turbo installed quickly
Great group of people quick to take care of me being out of town and time!

ME
gravatar
Mike E.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
08/05/2025
verified customerVerified Customer
10
Awesome group of technicians
This is the only place I would consider taking my truck

Verified Customer
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
08/04/2025
verified customerVerified Customer
10
Full service and oil leak repair
Ross and his team were great. They thoroughly inspected my truck and communicated with me throughout the process. Once the oil leak was diagnosed they shared the scope of repair cost and timing. Honest, prompt and timely service.

Verified Customer
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
07/29/2025
verified customerVerified Customer
10
Great service
Quick, and always quality work.

WD
Wade D.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
07/29/2025
verified customerVerified Customer
10
They were great
They found and fixed the issues I had.

JJ
Jorge J.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
07/16/2025
verified customerVerified Customer
10
Aftermarket installations and service
Had aftermarket Banks parts installed and drivetrain serviced, along with EGR cleaning. Everything came out great!

DC
Doug C.
Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5
07/15/2025
verified customerVerified Customer
9
Fantastic service they were fast and did a great job.
I made an appointment showed up was greeted promptly and the work was completed in less time than I expected. They made most dealerships look very bad.

TL
Tim L.
Dodge Pickup
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
07/04/2025
verified customerVerified Customer
10
Diesel Experts
Hard to find one stop Diesel experts . Fast and easy service for my 2007 Dodge 6.7 Ram . Check engine light gone . Now ok to smog . Thank you !

BD
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Bob D.
Ford Pickup
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
06/06/2025
verified customerVerified Customer
10
Provide great service. One happy customer
LCD provides great service and gets the job done!

ME
gravatar
Mike E.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/20/2025
verified customerVerified Customer
10
Amazing as always.
My truck wouldn't start. They were able to locate an internal oil leak and repaired it in the same day. It was a broken "O"-ring. Such a small but important part. It just makes me think about how knowledgeable they are to find that in that whole big engine area. I'm impressed. Keep up the great work guys. Special thank you to all whom we're involved.

Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5
05/19/2025
verified customerVerified Customer
7
2016 F250 oil change and tire rotation
Your staff treated me very well and Hugo had the truck back to me when he said he would. Kind of bummed that you have started charging for tire rotations since I came by and checked you out a couple of months ago. Thanks

EG
Eddy G.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/02/2025
verified customerVerified Customer
10
Catastrophic Failure
My 6.7L diesel had a catastrophic motor failure, could have been a couple different issues. West Coast was very straightforward with not only their pricing but their recommendations on whether certain work would be worth it or not. Treated me more as a friend than a client they were trying to squeeze every dollar out of. Very happy with their commitment to the customers needs.

Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5
04/09/2025
verified customerVerified Customer
9
2500 Chevrolet High Country
Great mechanics.

GL
Gordon L.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/09/2025
verified customerVerified Customer
10
Exceptional attention to detail
Had replace pre heat assy. Cummins 6.7l. They could not find a missing nut and it could fall into a cylinder causing engine failure. They went to the large effort to find this 1/4 inch nut. After much effort...they found it. SAVING me tens of thousands of $$.!!!
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