Unless you have long commutes every day, or plan on long trips with your car, the first one should suffice, thats over 18,000 miles per year. As far as deductible, thats really up to you, and how much of a difference it makes cash flow wise. Another thing you might want to check out is if the warranty is transferable. If you end up selling the car before 4 years, it will be a bonus to a prospective buyer