In the age of household austerity, dividing large expenses between you and your cohabitants can be a great way of cutting costs. Multi car insurance packages are one such example, and although they come with a few warning labels - if you're a steady middle-aged driver with a spotless record, it can be to your detriment to tie yourself to a teenager who has just got their licence - it is becoming increasingly popular all the same.
Insurance providers will often discount your premium if you insure multiple cars on the same package. This can work out cheaper in the long run if you have a number of vehicles to cover - especially if all the drivers are of the same age and experience level (which is why, curiously, it might be more advantageous for flat-sharing twenty-somethings than families).
As alluded to above, it is not always advisable to go for a two car insurance package if you are an experienced driver. Throw a teenager into the equation and your premium is likely to shoot up (although conversely, the teen's will probably come down a little).
Still, there is something to be said for doing away with the hassle of applying for multiple packages, and instead simply getting everything done at once. This can be especially helpful if you're trying to keep track of family finances. Leaving your teenage children to sort out their own packages can be risky as their inexperience leaves them more likely to be roped into a raw deal.
One thing to remember is that cars to be insured under the multi car policy must be at the same address. The owner of each car may be different but the address must be the same. The only exclusion to this rule is for immediate family members - their cars can be insured under one policy even if they live at different addresses.
Ultimately, there is no simple answer as to whether you will profit from a two car insurance coverage. In order to figure it out, your best bet is getting quotes for two separate packages and working out the difference over however long a period you need it for.
Esure's multi-car service currently promises a 10% discount on any car you add to your insurance package - and it's not just limited to the two; you can throw in your child's vehicle as well as your spouse's if you need to (but make sure you read the small print; offers like this often come with the caveat that new drivers are subject to different terms).
Aviva also tend to offer a more comprehensive service than their rivals - including alternative transport options in the event of an accident and a 24/7 claims line, along with the guarantee of a pay out if you're hit by an uninsured driver and it wasn't your fault.
You may want to read about: No Deposit Car Insurance.