My MY2012 SLK55 AMG is running over 7,000Km since I bought it in May. I have less than 3,000Km to go to consider for an MB extended warranty for another 2 extra years. After 10,000Km, an extended warranty requires $600 to MB to have the car certified by their mechanics. I still remember how expensive it was to maintain my C43 Amg before. My estimated mileage would be less than 10,000Km annually, not intending to drive it in our harsh Canadian winters. Wonder if it is worth $4,000 for the extended warranty? Any experience or comments?