I'm an actuary who oversees all of the auto insurance rates for a Canadian insurer. In Canada, we rely on the Insurance Bureau of Canada's
"Canadian Loss Experience Automobile Rating" (CLEAR) vehicle rate groups to determine the relative risk of one make/model versus another. The CLEAR VRGs are based on industry data that's normalized to remove the effect of the driver (since that's captured separately in each insurer's rating algorithm).
The Model S actually came up as a specific case study this week since we've found that the CLEAR VRGs don't work well for the Model S (at least, not yet). In particular, since it's a new model since 2012 there's limited claims experience to determine the CLEAR VRGs in previous years, so the IBC would have relied on a complement instead. It seems that the complement wasn't sufficient, and now that the claims experience for the Tesla is building, they're finding that the Model S is producing higher claim repair costs than originally anticipated. This isn't really surprising given:
- Expensive components/technology
- Aluminum body
- Limited availability of parts leading to longer repair times (which means the insurer has to pay for a rental vehicle for a longer time while the vehicle is being repaired)
- The fact that only certain body shops are certified to work on them (since handling batteries require additional tools and safety training)
Based on our findings, we're signficantly underpricing the insurance on the Model S relative to the risk, so I foresee that I'll have to increase my own rates on my Model S in the not-so-distant future
With all of that said, it's not all bad news. The relative rates of vehicle makes/models varies both on the cost of repair and the safety. The Model S is a VERY safe car and this positive characteristic is also reflected in the CLEAR VRGs (meaning that the Model S will have very low rates for any coverage that involves injury claims).
Most likely, your 39% rate increase is due to the adjustment of rates to the Model S as well as adjustments to other rating variables based on a statistical model of historical claims (e.g. where you live, your age group, your use of the vehicle, etc.).
Although it sucks to see your rates increase, I hope this helps provide some context
Contrary to popular belief, insurance companies aren't the greedy corporations that people believe they are. It's in every insurer's best interest to charge a rate that matches the expected annualized loss as close as possible -- if we charge too much, we lose clients to competitors -- if we charge too little, we attract new clients at less-than-adequate (i.e. unprofitable) rates.