AutoTrader EV Battery Health Tracker

SOH% badges on AutoTrader EV listings. Auto-scans searches, saves and compares scans, tracks price drops, flags unusual degradation.

Buying a used electric car? The battery's state of health (SOH) matters more than almost anything else, but sellers bury it in the description. This extension finds it for you on AutoTrader WHAT IT DOES • Shows a colour-coded SOH% badge on search results and listing pages when the seller mentions battery health • One-click scan: press "Find cars with State of Health (SOH%)" on a search and it walks the result pages, checks each listing in the background and lists every car that mentions SOH, sortable by SOH or price • Save scans per search (e.g. "Tesla Model 3", "BMW i4") and look back at them later • Re-scan and compare: see what's new, which prices dropped and which cars are gone • Star cars to track their price; drops appear in the extension and as a badge on the toolbar icon • Hide cars you've rejected so they're skipped in future scans • Flags batteries that are unusually degraded (or unusually healthy) for the car's age and mileage • Notes when a listing's SOH, certificate or price changes between your visits • Light, dark or system theme; adjustable scan size (50–500 listings) • Backs off automatically if Autotrader is slow, and lets you resume interrupted scans PRIVATE BY DESIGN Everything is stored on your device. No accounts, no analytics, no tracking, and nothing is sent anywhere except the normal page loads to autotrader.co.uk. NOTES SOH figures come from what sellers write in listings; the extension can't verify them. Prices for starred cars update when you next see the car in a search or on its page. This is an independent project and is not affiliated with Autotrader.