Why Retrospective Vehicle Valuations Need Real Expertise

Retrospective vehicle valuations – establishing what a car was worth at a specific past date – are regularly commissioned for insurance disputes, HMRC submissions, probate and Proceeds of Crime cases. The methodology is not obvious, and the results matter, as they can shift settlements, tax liabilities or insurance payouts by tens of thousands of pounds.

The market has never moved in a straight line. Auto Trader figures showed that average used-car prices rising around 7.1% between April 2020 and April 2021, driven by the pandemic’s perfect storm of lower supply (new-car part-exchange flow collapsed with new-car sales), higher demand (travel restrictions, savings not spent on commuting or holidays, avoidance of public transport), and government stimulus. Smaller prestige segments such as the compact executive sector rose further.

Five years on, the pandemic distortions still sit in the middle of many retrospective valuation periods. I’m no stranger to valuing vehicles at 2019 or 2020 dates, which means accounting for a market that climbed, plateaued, fell, and partially recovered, all within the valuation window.

One recent expert witness instruction centred on a competition prize required me to value a Mercedes-Benz C-Class AMG at three separate dates in 2019. Each date and data point had to stand on its own as a defensible market value. As I do not use price guide data, there was significant research involved,

Adjusting market data to account for time, condition, mileage, specification and regional variation is a judgment-led process, not a formula. My thirty-plus years in vehicle valuation – ten of them as a Valuations Editor at Glass’s Guide, another decade building online valuation algorithms for the trade, and the last fifteen as an independent expert witness – is what allows me to defend a retrospective figure under cross-examination.

If you need a retrospective vehicle valuation for court proceedings, an insurance dispute, an HMRC submission or a probate return, contact me to discuss the scope. All my valuations are prepared by me personally, never by AI, and comply with CPR Part 35, FPR Part 25 or CrimPR Part 19 as appropriate.