Handing over the keys hands over more than the car
When a vehicle is left with a garage, a valet, a tyre fitter, a car park attendant or a dealer, the law in most systems treats the business as holding somebody else’s property for a purpose. That relationship carries duties: to take reasonable care of the item, and to return it. It is an old idea and it sits underneath every service transaction involving a car.
The insurance follows the duty. A business that will be driving and holding customers’ vehicles has to insure that activity, because its own vehicle policies do not cover cars it does not own and a customer’s private policy does not cover a stranger driving for business purposes. Two different contracts, two different insurers, one set of keys.
Road risks cover is how a trade drives cars it does not own
The motor trade solution is a policy covering the business and its staff to drive vehicles in its custody for trade purposes. That is what allows a technician to road-test a car after a repair, or move it around a site, without any reference to whatever the owner has arranged. It is the trade equivalent of an ordinary motor policy, written around a business rather than around a vehicle.
The cover has boundaries, and they are worth knowing. It applies to trade purposes rather than to any use, it usually names or describes who may drive, and it typically excludes vehicles held for purposes outside the ordinary business. A mechanic taking a customer’s car home for the weekend is generally outside all of it.
Custody and control is the other half of the arrangement
Road risks deals with driving. The separate exposure is a vehicle sitting on the premises being damaged by fire, theft, a falling ramp or a careless reversing manoeuvre, and that is covered, if at all, by a custody or care-custody-and-control section. Not every business carries it, and the limits are set by the business rather than by the value of your particular car.
This is why the sign disclaiming responsibility for loss or damage is so common, and why it is so often less effective than it looks. Consumer protection rules in many markets restrict how far a business can contract out of its own negligence, though the extent of that protection is entirely local and needs checking where you are.
Your own policy may respond, and it may not want to
Depending on the wording, comprehensive cover may still respond to damage occurring while the car is with a trader, particularly for theft or fire. But making that claim means an excess, a claim on the record, and an insurer who will then pursue the responsible business for its money, which takes time and does not always succeed.
Some wordings go further and exclude loss occurring while the vehicle is in the custody or control of a motor trade business, precisely because a different insurer is expected to be dealing with it. Where that exclusion exists, the owner has no route through their own policy at all, and the only claim available is against the business.
The pattern above assumes a business with insurance. A neighbour who repairs cars at weekends, a friend moving a vehicle as a favour, or an unregistered trader working from a driveway may have none of it, and the fact that they are competent is irrelevant to whether anybody is covered when something goes wrong.
Nor does an owner’s policy necessarily rescue the situation. Cover for other drivers depends on the certificate, and permission from the owner does not create cover the policy does not grant. Where an uninsured driver damages a car or injures someone, the consequences reach the driver personally and can reach the owner too in jurisdictions that penalise permitting uninsured use.
What is worth establishing before the keys change hands
For an ordinary service the practical questions are short: does the business hold road risks cover, does it hold custody cover, and will the vehicle be driven off-site or kept overnight. A legitimate business answers all three without difficulty, and asking is unremarkable rather than insulting.
For anything unusual, and particularly for a valuable or non-standard vehicle, the answers matter far more, because the limits carried by a small business may be well below what the car is worth. The wording of every policy involved governs what actually happens, arrangements differ between markets, and none of this is a substitute for reading the documents that apply where the vehicle is.