The main difference between collision and comprehensive coverage comes down to the question of what the driver controls. Collision insurance will cover events within a motorist's control or when another vehicle collides with your car. Comprehensive coverage generally falls under "acts of God or nature," or things that are typically out of your control when driving. These can include events such as a spooked deer, a heavy hailstorm, or a carjacking.
To calculate the added cost in purchasing comprehensive and/or collision coverage we looked at annual insurance quotes for a 30 year old male from New York across four different insurance companies, and the ten best-selling vehicles in the US. We look at the range of rates you could pay from basic liability to policy plans with comprehensive and collision coverage. Collision typically costs more than comprehensive, although some companies require you to carry both rather than just one. Comparing quotes across at least three companies can get you lower car insurance rates.
If your car is worth more than $3,000 and/or is less than 10 years old, we'd also suggest both collision and comprehensive coverage, too. Our estimates suggest drivers can buy comprehensive and collision insurance for an average of $600 to $700 per year (however, the cost may be higher for some cars), so you would spend $3,000 to $3,500 in premiums over five years. If your car is currently worth less than $3,000, you will have spent more on insurance than your car is worth. You can obtain the estimated value of your car from sites like Kelley Blue Book and Edmunds. Once you have both the value and a quote for coverage, you can determine whether collision insurance will be worth it.