Mitsubishi sales are declining and in spite of that, they offer the best warranty in Canada (10-year/160,000 km powertrain and 5-year/100,000 km bumper to bumper warranties). It is still difficult to qualify their dependability factor as they have only been in Canada for a few years. If I base an opinion on local findings and American results, these cars should be at least average in the long run.

Good stuff:
Mighty 3.8L V6
Warranty

Not so good stuff:
Fuel consumption
Harsh ride

Competitors:
Honda Accord
Toyota Camry
Nissan Altima
Chevrolet Impala