Higher premiums

Business car insurance is typically more expensive than standard cover because a motorist who drives a vehicle for business as well as pleasure is deemed more risky. They will usually cover more miles, sometimes in heavy traffic and on unfamiliar roads. The chances of a claim therefore increase.
Don't be tempted to lie in an attempt to bring down the cost of insurance. When you apply for business car insurance quotes, the insurer will ask the usual questions about your age, postcode, and the make and model of the car. But you will also have to give details about your business and when and why you drive the vehicle for work. If you are dishonest, you are committing an offence and it could invalidate your policy. Your insurance would not then pay out in the event of a claim.