Short answer
Because the repairer has to repeat every coat the factory applied, and the estimating systems that insurers use pay for the extra ones. A public motor insurer in British Columbia publishes its allowances: a three-stage colour adds 35% to the refinish time, two-tone paintwork adds 0.8 hours for the first panel, and a four-stage colour needs approval before it can be billed at all. Those are one insurer's payment rules. No insurer or estimating body publishes average repair costs by colour.
A collision repair estimate is built from a database of labour times, and the finish is one of its inputs. The Insurance Corporation of British Columbia, a provincial public insurer, publishes the procedures its repairers follow. Its estimating system applies two-stage refinishing, colour coat and clear coat, by default. When the repairer ticks a three-stage box or enters a three-stage paint code, the system recalculates the refinish times for a three-stage process and shows the addition as a separate operation on the estimate. Where the database has no time for the vehicle, the procedure gives the rule to apply by hand: take the refinishing time and add a 35% allowance. The insurer's own note names two common paint codes as three-stage finishes, Mazda's 46G and 46V, the codes of a grey and a red that the maker charges extra for on its price lists.
Other estimating systems use different formulas for the same thing. Their reference guides are published to subscribers, and the pages could not be read for this review, so only the insurer's own figure is given.
Some colours go a step further. The same procedure defines a four-stage refinish by the stages that must actually be performed to qualify for payment: a base colour coat; a clear coat, after which the panel is taken out of the booth and sanded; a tinted coat; and a second, final clear coat. The estimating system does not recognise the process. To bill for it, the repairer has to support the claim with current procedures approved by the paint manufacturer for that specific paint code, follow a defined formula and obtain the insurer's approval beforehand. The administrative route is itself a cost: a finish that the estimating database cannot price takes a human decision on each claim. It mirrors the factory, where the EU reference document describes the most elaborate pearls as needing two passes through the paint shop, with a cure and a clear coat between them.
The insurer's table of refinish times not in the database shows how other finish features are paid. Two-tone paintwork is allowed 0.8 hours for the first panel and 0.4 hours for each additional one. Clear coat is 0.7 hours for the first exterior panel and 0.3 for each further panel, to a maximum of 2.5 hours. Blending, the practice of fading new colour into the adjacent panel so that a small mismatch does not show at the panel gap, has its own base time of 0.7 hours. These are small numbers individually, and they are allowances agreed between an insurer and its repair network, not stopwatch studies. Their significance is structural. A finish with more coats or more colours collects more of these lines, each multiplied by the shop's hourly rate, with paint materials charged separately on top.
A repair has to reproduce in a body shop what the factory did with robots. The EU reference document describes the factory's own difficulty: in-plant repairs are made either with repair paint systems of the kind used in body shops or with the production paints, bodies with larger defects go back through the whole topcoat line, and the thick films of multi-coat pearls leave less scope for repair. An effect colour adds a matching problem that a solid colour does not have. Its appearance depends on how the flakes settled, which depends on how it was sprayed, so the same paint code can look different from one application to the next, and the colour has to be judged at more than one angle. The colour control section covers how such finishes are toleranced; this page is concerned only with why they collect extra labour.
Nobody publishes what repairs cost by colour. Insurers, estimating-data companies and repair networks hold claim-level data that could show whether cars in three-stage or matt finishes cost more per repair, and none of it is public in a form with a stated method. Matt finishes are the largest gap: Colourwise could not read a maker's own technical document on repairing them, so nothing is asserted here about how a matt clear coat is repaired or what that costs. What can be said is limited to this: one public insurer pays a stated percentage more labour for three-stage colours, requires approval for four-stage ones, and pays fixed additions for two-tone work. Anything about the size of the bill for a given car depends on the shop's rates and the damage.
| What it concerns | Colour or finish factor | Published figure | Where and when | Kind of evidence |
|---|---|---|---|---|
| Collision repair refinishing paid by a public motor insurer | Three-stage (base, mid-coat, clear) colours | 35 % of total refinish time added | British Columbia, Canada; Procedure updated June 2025 | Documented industry practice |
| Collision repair refinishing paid by a public motor insurer | Four-stage colours (base, clear, tinted coat, second clear) | No figure published | British Columbia, Canada; Procedure updated June 2025 | Documented industry practice |
| Collision repair refinishing paid by a public motor insurer | Two-tone paintwork | 0.8 labour hours for the first panel (0.4 for each further panel) | British Columbia, Canada; Procedure updated June 2025 | Documented industry practice |
| Operation | Allowance | Unit |
|---|---|---|
| Three-stage refinishing | 35% of total refinish time | added labour |
| Two-tone, first panel | 0.8 | hours |
| Two-tone, each additional panel | 0.4 | hours |
| Clear coat, first exterior panel | 0.7 | hours |
| Clear coat, each additional exterior panel | 0.3 | hours |
| Clear coat, exterior maximum | 2.5 | hours |
| Blend, base time | 0.7 | hours |
| Four-stage refinishing | By formula, with prior approval | not in the system |
Why: Allowances are negotiated payment rules, set per programme.
Fix: Cite them as what a named insurer pays, with the date of the procedure.
Why: The estimating system defaults to two-stage unless the paint code or checkbox says otherwise.
Fix: Enter the paint code from the vehicle's identification plate before the estimate is calculated.
Why: Materials for a mid-coat and a second clear are charged separately from labour.
Fix: Look at the materials line and the blend lines as well as the refinish hours.
Each statement is labelled by kind — established fact, a standard’s requirement, observed market data, a convention, or Colourwise’s own interpretation or analysis — with the strength of the evidence behind it.
ConventionStrong evidence· British Columbia, Canada· Procedures updated June 2025
The Insurance Corporation of British Columbia's repair procedures set three-stage refinishing at 35% of total refinish time where the estimating database lists no time, on top of a default two-stage refinish.
Caveat: One public insurer's payment allowance for cars, pick-ups and vans; other insurers and estimating systems use other formulas.
Source: ICBC refinish times not in the database (material damage partner procedures); Three and four-stage refinishing (material damage partner procedures)
ConventionStrong evidence· British Columbia, Canada· Procedure updated June 2025
The same insurer does not recognise four-stage refinishing in its estimating system: billing requires paint-manufacturer procedures for the specific paint code, a defined formula and prior approval.
Source: Three and four-stage refinishing (material damage partner procedures)
ConventionStrong evidence· British Columbia, Canada· Procedure updated June 2025
The insurer's table allows 0.8 labour hours for two-tone refinishing of the first panel and 0.4 hours for each additional panel.
Caveat: A labour allowance; paint materials and the hourly rate are separate.
Source: ICBC refinish times not in the database (material damage partner procedures)
FactStrong evidence
The EU reference document states that vehicle bodies with larger paint defects are sanded, masked and returned through the whole topcoat line, and that the increased film build of high-pearlescent finishes leaves less scope for repairs.
Caveat: Concerns factory repair, not body-shop repair, and gives no rates.
Colourwise interpretationLimited evidence
No insurer, estimating body or repair network was found to publish average repair costs by paint colour or finish with a stated method, and no maker's technical document on repairing matt finishes could be read.
Based on: Colourwise's search in October 2026 of insurers' published procedures, estimating guides and industry reports; the estimating guides found were closed to non-subscribers.
Caveat: An absence of published data found, not proof that none exists.
Reviewed 6 October 2026. Colourwise summarises its sources in its own words and does not reproduce standards text or proprietary colour data. Spotted an error? Tell us.