Automotive Repair

Great company. Takes care of our fleet at work!

We took our diesel pusher, 2001 Fleetwood Discovery, here due to air brake low pressure. They quickly diagnosed the problem and repaired. They caught a severe leak in engine coolant hose and had it replaced next day. Their foreman Dan was very helpful and their team did a great job.

Great service and great guys. thank you.

3 cheers for Jed, good honest guy.

They are acting to do something instead of fixing the problems because of grabbing money

Great honest and reliable service. Bought a few plows there and had them each installed on my trucks, one of the trucks was a brandnnew 2017 denali and was concerned of how it would end up on the front end but they did a great job making a few cuts to make it work and look great at the same time

In and out oil change service On the road trailer maitance Top notch Heavy Truck Repairs

Friendly small business with knowledgeable staff who always do good work

Great selection of vehicles and top-notch service. Quick, friendly and efficient. There's nothing better than feeling like you're really being looked after! Good place for trucks and RVs too!

They help meet all the way, I salute them big time.

They are just the best. Super friendly and the work they do is beyond reproach. Totally recommend!

Excellent service quality and above average scheduled time performance. Very knowledgeable business and provides great customer care service. Will answer any questions you have via phone or email. Dustin is an absolute professional of his trade. My truck runs smoother and performs stronger than ever after Apex put their touches on it. This is the place to take your Diesel engine in the Northeast Region!!

Always good, clean,professional work. Great group of mechanics.will be using them alot in the future!

I am an employee.

The staff at Derek’s diesel are amazing at what they do. I had an issue with a Cummins 8.3 in a ford l8000 that no one could figure out, I had spent money on fuel lift pumps injectors and other parts such as throttle linkages fuel lines etc, Joe simply asked what the problem was I told him it was very sluggish and slow going up any sort of incline and he put a ball valve on the counter and said you need this. It was the return ball valve on the back of the injector pump. I replaced this part and seals and took it for a test drive, it worked perfectly. After 1 week of not being in service and 3-4 opinions Derek’s diesel solved my mystery and put me back to work. Thanks Joe for your help

I took all of those advisements and went on in and was absolutely amazed at the level of service. Not only was their quote less than half of every other garage that I had been to but they took me home and then 5 hours later delivered my truck to my door and like with a pizza delivery brought an invoice, my F350 and a portable tap machine to my door and asked if I would like to test drive it BEFORE I paid the bill. I have never even heard of this level of service EVER. NOT EVEN FROM THE LOCAL FORD DEALER WHO WASNT EVEN INTERESTED IN FIXING MY TRUCK AFTER THE WARRANTY WAS UP. They just told me that I should buy a new truck and offered me peanuts for my 3.8 year old F350 DUALLY DIESEL. And when I say peanuts I mean less than 4 grand on trade in value. That’s how much they valued my 84.3 thousand dollar sale from 3.8 years ago. So Dale thanks very much for taking the time to take care of my truck, and Shawn thank you for making me feel welcome the day I came in to ask the questions. You both should be proud of your little operation there on the corner that everyone drives by but never goes into. To all you folks who don’t take the time to stop in? You are missing out on probably the best all round and well rounded and friendly and fast paced honest garages in the entire county of Simcoe. Kudos and hats off to you guys. I’ll be back soon. Thanks Chris