A resale market pricing in an unknown
Rest of World reported on September 8, 2026 that about four in five Chinese used-car dealers now turn away electric vehicles older than five years. A three-year-old EV resells for about 45% of its original price, down from almost 55% in 2023. A battery replacement can cost up to a third of a new car's price. Manufacturers typically cover the battery for eight years or 160,000 kilometres, and that cover shrinks with every year of age.
The most telling detail in the report is not the depreciation figure. Modern EVs can report battery health through standard diagnostic ports, and third-party services now certify the results, yet the report says used-car dealers rarely ask for those readings. Dealers price on age, mileage, warranty status and brand reputation instead. The battery is the most expensive component and the one nobody can cheaply verify, so buyers and dealers discount the whole car. The policy question is whether China's rules do anything about that.
The case for the current framework
The strongest defence of Beijing's approach is that it has moved faster than most jurisdictions on battery accountability. The State Administration for Market Regulation's household-vehicle repair, replacement and return regulation (Order No. 43, issued July 22, 2021, in force January 1, 2022) is the 'Three Guarantees' rule. It sets minimum coverage of two years or 50,000 km for the guarantee period and three years or 60,000 km for the repair period. It also requires producers to state the power battery's capacity-decline limits in the guarantee certificate. That is a real consumer protection: a new-car buyer can, in principle, hold the maker to a stated degradation threshold.
The Ministry of Industry and Information Technology and five other departments went further. Their interim measures on recycling and comprehensive utilization of used NEV power batteries took effect on April 1, 2026. They create a national traceability platform and a digital ID for each battery, and industry reporting says they require batteries to leave with the scrapped vehicle rather than be removed and resold separately. The public-safety and environmental logic is sound: informally recycled lithium batteries are a fire and pollution hazard.
Where the framework stops
Neither instrument is written for the used-car buyer or the independent repairer. Three gaps stand out.
- Warranty rules end with the warranty. The stated degradation limit and minimum coverage apply to a new car. A five-year-old EV is largely outside the statutory periods, so the 'Three Guarantees' rule gives a used buyer little. The rule also says repair parts must be supplied or approved by the producer, and it bars sellers from restricting where consumers choose to maintain and service a car. It does not, on its face, oblige manufacturers to give independent shops diagnostic tools, repair documentation or battery-module parts.
- The digital ID serves regulators and recyclers. The MIIT measures create a traceability platform. The official summary we could verify does not say owners or independent shops can read battery-health data from it. Traceability of where a battery ends up is a different thing from a verified state-of-health record that follows the car through resales.
- Vehicle-body integration narrows the aftermarket. Requiring batteries to be scrapped with the vehicle closes a dangerous grey market. It also limits the second-life and refurbishing channels that could give a degraded pack a lower-cost path than a full replacement. The Gasgoo trade press has reported that MIIT is also dropping the 'cascade utilization' concept, though we did not verify that against MIIT's own text.
The result is an information asymmetry that regulation has not addressed. Dealers can't cheaply verify what a pack is worth, so they reject the whole category. That is a market failure a light-touch rule can fix, without new bans.
A proportionate fix
The pro-innovation answer is not to mandate price floors or force dealers to accept old EVs. It is to make battery health a portable, standardised fact.
- Owner access to state-of-health data. Owners, and shops they authorise, should be able to read a standardised battery state-of-health record through the diagnostic port. The technical capability already exists, per Rest of World.
- Link the record to the digital ID. MIIT's new battery ID could carry a certified health history, so a used-car listing can show a verified figure. That would use infrastructure Beijing has already built.
- Fair access to diagnostics and parts for independent repairers. Keep safety controls, since high-voltage packs are dangerous. But safety certification of repairers is a narrower tool than a manufacturer monopoly on tools and modules.
- Let refurbishment compete. If regulators want fewer fraudulent 'repackaged' packs, they should certify remanufacturers and label refurbished packs rather than drop the category.
The counterargument deserves a hearing. Manufacturers say open access to battery management systems raises safety, liability and IP risks, and unauthorised repairs of lithium packs can cause fires. Those concerns justify certification requirements. They don't justify keeping the one number that sets a used EV's price from the person who owns it.
What to watch
Chinese carmakers exported more than 2.5 million EVs last year, per Rest of World, so the used-car problem will travel with them to other markets. A national standard for portable battery health data would help domestic owners, and it would also make Chinese exports easier to resell abroad. The evidence so far is a market-side symptom, not proof that any specific rule failed. The gap it points to is that the 2022 and 2026 rules regulate the new-car warranty and the end-of-life battery, and the years in between are largely unregulated.