Physical damage costs
If you drive or operate your vehicle under illegal circumstances, your insurance is no longer valid. Specifically, this means if you drive drunk and get in an accident, not only will you have to face the penalties of the law, but you are potentially liable for all damages to your own car as well as any damages to anyone else's vehicle.
Accident benefit costs (in Ontario)
And don't forget accident benefits if you injure another person. The injured person's insurance will provide him/her with the immediate coverage he/she needs for his/her medical expenses, but his/her insurance company can then sue you for compensation. Claims where people have been even mildly injured can run into the millions of dollars.
Increase in future auto insurance premiums
So you got caught drinking and driving, paid your fine, escaped without an accident, but now it's time to renew your auto policy. That one DUI (Driving under the influence) charge will cost you for years to come.
Your driving record is automatically wiped out after a DUI charge and you have to start from scratch earning the trust of an insurance company. This means your rates could double or triple for the first year alone, and your rates will remain higher than normal for at least 6 to 10 years following the charge. This can add up to thousands of dollars over the years.
The bottom line…
There are hefty financial implications of drinking and driving, but those effects pale in comparison to pain you can cause other people. If you are going to be drinking, please use a designated driver.