Try: http://www.omvic.on.ca/ Which enforces the Motor Vehicle Dealers Act. Their tag line is 'call us if you feel you have been treated unfairly by a dealer'. In this case, the used dealer.

Since it was neglect and that would deny you warranty, then according to the Ministry's pages, that could be considered a 'key item' and you have 90 days to cancel a contract if a 'key item' was not disclosed to you at time of sale. If you knew the vehicle was neglected in such a way as Dixie described, you would not have purchased the vehicle.

cancellation letter: http://www.omvic.on.ca/services/consumers/cancel_agreement.htm

In cancelling the contract, you might be out what you had to pay to Dixie to inspect the vehicle, but get them to give you the findings in a report, that states the neglect was onset before when you purchased the vehicle, as evidence for cancelling the contract. All in all, you'll have driven an Evo for 2 months for the cost of gas and 3hrs labour.