Insuring multiple cars

Why one policy usually wins

• A multi-car discount, which is one of the larger routinely available discounts
• One renewal date and one set of paperwork
• Easier to add or remove vehicles and drivers
• Often required to qualify for a multi-policy discount with home or renters
• A single deductible decision to keep track of

Driver assignment

Where you have several vehicles and several drivers, insurers assign drivers to vehicles for rating — usually matching the highest-rated driver to the highest-rated vehicle, though methods differ.

This matters when you add a young driver. Which vehicle they're assigned to can change the premium meaningfully, and it's worth asking how your insurer does it and whether the assignment reflects reality.

When splitting can be cheaper

• One driver has a serious violation or at-fault accident that would surcharge the whole policy
• One vehicle is a classic or collector car better served by a specialist policy
• A vehicle is stored and needs comprehensive-only coverage
• An adult child with their own vehicle would be rated better independently
• One vehicle is used for business and needs different coverage

Coverage doesn't have to match

You can carry different deductibles and different coverages on each vehicle. Dropping collision on an old car while keeping it on a newer one is a sensible and common structure.

Liability limits, though, generally apply across the policy — and should be set against your assets rather than against any one vehicle.

Worth checking annually

• Whether the oldest vehicle still justifies collision and comprehensive
• Whether driver assignments still match who drives what
• Whether a vehicle now sits unused and could go to storage coverage
• Whether a driver has left the household
• Whether the multi-car discount is actually being applied