It's hard to find a decent mechanic in Toronto that doesn't require a trip so deep into The 905 that it may be worth actually moving to Aurora instead of incurring the towing charges out there. I came across the Active Green + Ross downtown the first time I needed an emergency oil changes. The next time, my clutch blew up in my 1992 Nissan Sentra.
This is a family run business, owned and operated by Diana and Scott Moody. They started up the business 20 years ago having known nothing about the automotive industry. Given that the parking lot is typically choked with cars needing servicing, it's obviously busy and they've obviously sorted out the automotive business.
Both of them run the phones, sort out the invoices, and handle your work that needs to be done efficiently. Friendly? You'd be hard pressed to find someone that's friendlier than here. Either of Diana or Scott will look after you and make sure that your car is not only serviced but serviced properly.