Quick answer
If another vehicle clipped your wing mirror and carried on, the starting point on fault is usually straightforward: the driver who had to leave their own side of the road to get past something is the one who has to justify the manoeuvre. Highway Code rule 163 tells drivers to give way to oncoming vehicles before passing parked vehicles or other obstructions on their side of the road, and rule 167 warns against overtaking where the road narrows. So if the parked cars, the skip, the roadworks or the delivery van were on their side and they came through anyway, liability points at them. If the obstruction was on your side, the same logic points back at you. Where both vehicles were moving on a genuinely narrow street with nothing blocking either side, fault turns on lateral position: who was further from their own kerb at the moment the mirrors met.
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Someone hit my wing mirror and drove off: what now?
If another vehicle clipped your wing mirror and carried on, the starting point on fault is usually straightforward: the driver who had to leave their own side of the road to get past something is the one who has to justify the manoeuvre. Highway Code rule 163 tells drivers to give way to oncoming vehicles before passing parked vehicles or other obstructions on their side of the road, and rule 167 warns against overtaking where the road narrows. So if the parked cars, the skip, the roadworks or the delivery van were on their side and they came through anyway, liability points at them. If the obstruction was on your side, the same logic points back at you. Where both vehicles were moving on a genuinely narrow street with nothing blocking either side, fault turns on lateral position: who was further from their own kerb at the moment the mirrors met.
What you do in the next ten minutes matters more than anything you do next week. Do not chase them. Get the registration down first, in your notes app or spoken into a voice memo, then the make, model, colour and direction of travel. Photograph your car before you move it or fold the mirror back into place: the mirror in the position it finished in, the contact point, any foreign paint on the housing or the door, and the road from kerb to kerb so the width is on record. Pick up the broken pieces from the carriageway, because indicator lenses and housing fragments often carry manufacturer part numbers that help identify the other vehicle. Then report it to the police and ask for an incident reference number. If you have a dashcam or rear camera, export the clip that same day before the loop overwrites it.
One more thing to know before you decide whether it is worth bothering with. A wing mirror is no longer a cheap part. The housing on a modern car can hold a heating element, a power-folding motor, memory motors, auto-dimming glass, a side repeater indicator, an approach lamp, a blind spot warning lamp and, on a great many models, a downward-facing camera feeding the surround-view system. Add colour-matched paint, blending into the door, and post-repair function checks, and a repair that people assume is trivial often is not. CityGrip Accident Claims manages that whole process for non-fault car and van drivers, including private hire and PCO drivers, so the cost is pursued from the at-fault insurer rather than taken out of your own policy.
Whose fault is it if we were both moving on a narrow road?
Mirror-to-mirror contact between two moving vehicles is almost always a lateral position argument, not a speed argument. The road has a fixed width and the two cars have a fixed width. If the mirrors touched, at least one driver was further from their own kerb than the geometry allowed. The first question an insurer or an independent engineer will ask is what was on each side of the road. Highway Code rule 163 is explicit that you give way to oncoming vehicles before passing parked vehicles or other obstructions on your side, so if a line of parked cars sat on their side and they pushed through against you, they were the one taking the road that was not theirs. On a single-track road, rule 155 goes further and expects a driver to use a passing place, wait opposite one, or reverse to reach one.
The damage itself can settle the direction of the strike, and this is where a lot of people give away an advantage by tidying up too soon. Many door mirrors are designed to fold back flat against the door and are noticeably stiffer folding forwards. A mirror knocked rearward, flat against the glass, is consistent with a strike from a vehicle travelling in the opposite direction, because relative to your car that vehicle was moving backwards along your flank. A mirror shoved forwards, or one where the arm or mount has sheared, is more consistent with a blow from behind, from something overtaking you on that side. The scuff pattern on the housing, the direction of the scratch on the paint and the height of the contact all tell the same story. Leave it exactly as it ended up and photograph it first.
Be realistic about the alternative. Where both vehicles were moving, there is no footage, no witness and no obstruction on either side, insurers frequently land on a split liability outcome and you end up carrying half the loss. That is the default when nobody can prove lateral position. It is not a legal principle, it is what happens in the absence of evidence. Everything in the next section exists to stop that happening. The single most valuable piece of evidence in a narrow-road mirror strike is anything that fixes where each car was in relation to its own kerb at the moment of contact, which is why the width photographs and the debris field are worth more than a long written account of how it felt.
DETAIL
Section 3 of the walkthrough.
What if my car was parked when the mirror was hit?
This is the easier variant, and it is the more common one on residential streets and around minicab ranks. A lawfully parked, stationary vehicle is very rarely held at fault, because the moving driver had the whole road, unlimited time to judge the gap and no competing hazard to react to. If they misjudged the clearance and struck your mirror, that is a failure to pass an obstruction safely, and driving without due care and attention under section 3 of the Road Traffic Act 1988 is squarely in play. It is a summary offence carrying a fine at level 5 on the standard scale, discretionary disqualification and three to nine penalty points under endorsement codes CD10, CD20 or CD30. The fact that they left afterwards does not help their position.
There are only a few realistic arguments the other side can run, and they are all about how you parked. Rule 242 of the Highway Code says you MUST NOT leave your vehicle in a dangerous position or where it causes any unnecessary obstruction of the road. Rule 243 lists places you should not park at all, including on a bend and opposite or within ten metres of a junction. Rule 239 says to stop as close as you can to the side. So an insurer may argue contributory negligence if you were parked a long way off the kerb, half on a bend, opposite a narrow pinch point, or with the mirror left extended on a street where everyone folds theirs in. None of those makes you the cause of the collision, but they can be used to shave your recovery, so photograph the kerb distance before you move the car.
Evidence for the parked variant is mostly about speed of collection. Doorbell cameras and shop CCTV are often the difference between a traced driver and an untraced one, and retention periods are frequently short, so ask the same day or the next day and ask in person rather than by email. Photograph any note left under the wiper before it blows away or the ink runs. Worth knowing: leaving a note is courteous but it does not by itself satisfy section 170 of the Road Traffic Act 1988. Subsection (2) requires details to be given to a person having reasonable grounds for asking, and subsection (3) requires the driver to report the accident where those details were not given at the time.
Is a wing mirror actually worth claiming for, or should I just pay?
People assume a mirror is a twenty-minute job because they are picturing a 1990s car with a piece of glass and a plastic shell. That is not what is on your car. Depending on the model, the housing can contain an electric heating element, a power-folding motor, memory position motors, electrochromic auto-dimming glass, the side repeater indicator, a puddle or approach lamp that projects onto the ground, the blind spot warning lamp that lights up when something is in the adjacent lane, and a downward-facing fish-eye camera that feeds the 360-degree surround-view display. Surround-view systems are commonly built with a camera under each door mirror. Replace the glass alone and it is cheap. Replace a full electronic housing, painted to match and blended into the door, with function checks afterwards, and it is a different job entirely.
There is a roadworthiness dimension too, which is why this is rarely a repair you can defer indefinitely. The Road Vehicles (Construction and Use) Regulations 1986, regulation 33, requires mirrors to be fitted and to be fixed so they remain steady under normal driving conditions. The MOT inspection manual treats an obligatory mirror or indirect vision device that is missing, insecure, excessively damaged, inoperative or not providing an adequate view to the rear as a major defect. For a car first used on or after 1 August 1978 and before 26 January 2010, two mirrors are required, one of which must be the exterior offside. For cars first used on or after 26 January 2010, three are normally required. If the side repeater indicator lives in that housing, the Road Vehicles Lighting Regulations 1989 bring it into scope for vehicles first used on or after 1 April 1986.
Then there is the damage you have not looked at yet. A mirror strike very often carries on into something else: a scuff along the front wing where the vehicle first made contact, a scrape down the door skin, a chip on the A-pillar, a cracked quarter light, or a stress crack in the door mirror mounting where it meets the door frame. Once the whole picture is assessed, the repair is frequently well above a typical policy excess, and that changes the maths on whether to claim. It also changes the maths on whether to claim through your own insurer, because paying an excess to fix damage that somebody else caused, then waiting months to get it back, is not the only route available to you.
How do I prove what happened when it was over in a second?
Start with paint transfer, and the single most important instruction is this: do not wash the car. When two painted surfaces strike each other at an angle, each usually leaves material on the other. Foreign paint on your mirror housing, on the leading edge of the housing or smeared along your door is physical evidence of the other vehicle's colour, and it will be gone the first time the car goes through a wash. Photograph it in daylight, straight on and at a raking angle, with something for scale next to it. If the police later stop a vehicle with a damaged mirror and your paint on it, the match is what turns a suspicion into a traced driver. If you have already booked a wash, cancel it until the photographs are done.
Work the debris field next, because it is the part almost everyone walks past. Mirror glass fragments, splinters of the painted housing and the shattered lens of the side repeater will be lying on the carriageway roughly where contact happened. Photograph them where they lie before you sweep them up, then bag them. Plastic mouldings frequently carry a manufacturer part number or supplier marking on the inside face, and a part number can identify the make and often the model of the vehicle that lost it. Measure the height of the contact point on your car from the road surface as well. Mirror height on a small hatchback, a saloon, a high SUV and a panel van differ substantially, so the height of the scuff narrows down what type of vehicle hit you.
Now fix the geometry and the witnesses. Photograph the road from kerb to kerb, standing back far enough to show both sides, then take a shot from roughly your own driving position and one from where the other driver would have been sitting. Include any centre line, hatching or parking bay markings, and any obstruction on either side, because that is the rule 163 point in a single image. Save the dashcam clip and any rear or cabin camera footage the same day, and note the exact time so it can be matched against nearby CCTV. Footage can be submitted to the relevant police force through the National Dash Cam Safety Portal, used by forces under the Operation Snap banner. If somebody stopped, take their name and mobile number there and then. A witness who can say which side of the centre line each car was on is worth far more than one who says the other driver seemed to be going fast.
What if they say I was too far over, or that I was speeding?
Speed rarely decides a mirror strike, and it is worth understanding why so you can say it clearly. A car travelling too fast in its own lane still does not put its mirror into yours. What causes the contact is one vehicle occupying road space that belonged to the other, which is a question of lateral position. Speed becomes relevant only in a narrower sense: whether a driver was going too fast to stop, wait or ease over when the road pinched, which is the substance of rule 167 about not overtaking where the road narrows. So if the other side alleges you were speeding, that allegation does not answer the geometry. Insist on the geometry: where was each car in relation to its own kerb, and what was on each side of the road.
You rebut it with data rather than argument. Dashcam footage with a GPS overlay records both speed and position. Telematics or a black box policy holds the same information. If you drive for a private hire operator, the trip record on the booking app gives a timestamped GPS trace of where the vehicle was and how fast it was moving, which is difficult evidence to wave away. Combine that with the road width photographs and the height of the damage and you have a coherent account. If the insurers still push for a split, remember that contributory negligence reduces your recovery, it does not extinguish the claim, and a well-evidenced file is what stops a defensible non-fault claim drifting into a fifty-fifty settlement by default.
What if the driver never stopped, and can they be traced?
Driving off is not a grey area. Section 170 of the Road Traffic Act 1988 applies where, owing to the presence of a vehicle on a road or other public place, an accident causes damage to a vehicle other than the driver's own. Subsection (2) requires the driver to stop and, if required by any person having reasonable grounds for so requiring, to give their name and address, the name and address of the owner and the identification marks of the vehicle. Subsection (3) requires them to report the accident if those details were not given. Highway Code rule 286 puts the reporting deadline as soon as reasonably practicable and in any case within 24 hours. Failing to stop is a summary offence punishable by up to six months, a fine at level 5 on the standard scale (unlimited for offences committed on or after 12 March 2015) or both, with discretionary disqualification and five to ten penalty points, endorsement code AC10. Failing to give particulars or report within 24 hours carries the same points range under AC20.
If you have the registration, you are usually in good shape. Report the incident and get a reference number, then let your claims handler identify the other vehicle's insurer. The Motor Insurers' Bureau operates the Motor Insurance Database, and its askMID service includes a third-party enquiry that returns the insurer of a vehicle involved in an accident with yours. From there the claim is presented to that insurer in the normal way. The other driver leaving the scene does not weaken your claim against their policy. In practice it often strengthens the overall picture, because an insurer defending a policyholder who failed to stop is defending from a poor position, and the police report sits on the file.
If the driver stays untraced, be clear-eyed about the limits. The Motor Insurers' Bureau Untraced Drivers Agreement 2017 does not pay out for damage to property on its own. The MIB is not liable for a property damage claim unless an award for significant personal injury has been paid to a claimant in respect of the same event, and the loss exceeds the specified excess, currently £400. Significant personal injury is defined as death, or injury resulting in two or more nights of inpatient treatment, or three or more sessions of outpatient treatment. The old fixed five and fourteen day police reporting deadlines were replaced in 2017 with a requirement to report as soon as reasonably practicable. In plain terms, a mirror-only hit and run with no registration will usually not be recoverable from the MIB, which is exactly why getting the plate at the scene matters so much.
Should I claim through my own insurer or go direct to theirs?
Running a low-value repair through your own comprehensive policy is the default people reach for, and it is often the worst option available on a non-fault mirror claim. You pay your excess up front, then wait, sometimes for months, for your insurer to recover it from the other side. The claim goes onto your record while liability is unresolved, and insurers commonly treat an open claim as an open claim regardless of who caused it. Protected no-claims discount protects the discount percentage, not the underlying premium, so a protected policy can still be re-rated at renewal. On a repair that turns out to be a few hundred pounds above your excess, that trade is rarely worth making.
Notifying is not the same as claiming, and this trips people up. Nearly every motor policy contains a duty to notify the insurer of any incident, whether or not you intend to claim on the policy. So tell them what happened, make clear you are pursuing the at-fault driver and are not claiming on your own cover, and keep a record of that conversation. Then pursue the other side directly for your losses: the repair, your out-of-pocket costs, loss of use, and any excess you have already been made to pay. This is what accident management exists to do, and it is the route that keeps the money out of your policy history.
The court route sits behind all of this as leverage rather than a first step. A claim for damage to your vehicle is a claim in tort, and section 2 of the Limitation Act 1980 gives six years from the date of the collision. Under the Civil Procedure Rules, the small claims track is the normal track for claims valued at not more than £10,000, which covers the overwhelming majority of mirror and panel damage claims. Costs recovery is very limited on that track, which cuts both ways: it keeps your downside contained if you lose, and it means the other insurer knows a stubborn refusal can end up in front of a district judge cheaply.
DETAIL
Section 9 of the walkthrough.
What actually happens once CityGrip runs the claim?
The first question is whether the car is safe and legal to drive. A hanging mirror with the glass gone is not a cosmetic problem: an obligatory mirror that is missing or not giving an adequate view to the rear is a major MOT defect, and driving on with restricted rearward vision invites a careless driving allegation. If the vehicle should not be moved, CityGrip arranges recovery and secure storage rather than leaving it on the street where it can be hit again or ticketed. Storage matters more than people expect on a disputed claim, because the vehicle in its damaged state is the evidence, and once it has been repaired or moved through several hands, the other insurer's engineer will start questioning what caused what.
Next comes an independent engineer inspection. The engineer records the damage properly, establishes which parts are involved, confirms whether the housing carries a camera, sensor, lamp or heating element that needs replacing and checking, and produces the report that the at-fault insurer's own engineer will engage with. That report is what stops a claim being settled at glass-only money when the real repair involves an electronic housing, colour-matched paint, blending into the door and post-repair function checks. Repair is then coordinated with an approved bodyshop, with the correct parts and paint process rather than the cheapest available route, and the vehicle is checked before it is handed back to you.
Where liability points at the other driver and the usual eligibility checks are met, a like-for-like replacement car or van is provided at no cost to you. This is credit hire in industry language, which simply means the charges are carried and then recovered from the at-fault insurer rather than billed to you, within the framework of the ABI General Terms of Agreement that sets out agreed rates and protocols between insurers and providers. CityGrip then handles the correspondence with the at-fault insurer for the repair, the replacement vehicle and your uninsured losses. Nothing here is a guarantee: liability and eligibility always qualify a replacement vehicle. CityGrip does not handle personal injury in-house, and if you were hurt, an injury enquiry is passed to an authorised legal partner only with your separate written consent. The fee structure is deliberately low and transparent, because on a claim this size a heavy deduction defeats the point of bringing it at all.
What if I drive a minicab, PCO car or private hire vehicle?
For a private hire driver, a mirror strike is not a cosmetic annoyance, it is lost shifts. A licensing authority inspection and an MOT both treat a missing, insecure or excessively damaged obligatory mirror as a major defect, so the vehicle can be taken off the road until it is fixed, and an operator will not let you work a plated vehicle that fails a roadworthiness check. That means the real loss is the repair plus every day you are not driving, which is why the replacement vehicle question is the one that matters most. Any replacement has to be a vehicle you can legally work in, licensed and plated for your authority, not simply any car of a similar size, and that is arranged subject to liability and the usual eligibility checks.
Private hire drivers also tend to have better evidence than they realise. Most already run a forward-facing camera and many run a cabin camera, both of which capture the moment and the seconds either side. The booking app trip record independently confirms where the vehicle was, at what time and at what speed, which answers a speeding allegation without relying on your word. Save all of it before the device overwrites itself and before the app's retention window closes. One note on scope: CityGrip works with car and van drivers, including private hire, PCO and minicab drivers, and does not handle hackney carriage or black cab work, HGVs, lorries, buses or coaches. A replacement vehicle from CityGrip means a car or a van.
Take action
If you have just been in a non-fault collision, the fastest way to protect your claim is to open the file with us inside the first hour. We dispatch recovery, lodge the relevant CCTV requests inside the retention window, and notify the third-party insurer for you.
