Bought a car from these guys in November 2020. Had a pleasant experience with our salesperson, Anthony, but the paperwork person was highly unpleasant (surprise, her name was Karen.) Then just took the car in for an oil change and discovered that instead of doing an oil/air filter change and engine flush like they said they’d done, they’d added a can of Marvels mystery oil to make it run better for a week or so. Our mechanic said he sees this from Dueck regularly. Will not buy from them again.