Assuming Canada uses salt in the winter in the same amounts as the Northern US, rust will eat the car before the mechanicals wear out.
My last two cars succumbed to rust at a little over 20 years of age yet were still reliable, started easily and ran well.
Depends on province; ON loves salt (salt mines and auto manufacturing go hand in hand?).
AB uses grit and brine, I see lots of older cars driving around here (in good shape excluding windshields).