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Buying guides
Practical guides for buying a used car, with sources for each guide.
Other buying guides
- How to avoid overpaying for a used carCompare the asking price to an independent market-value estimate for the same mileage, condition, and options, not just similar-looking listings, and treat a price that sits noticeably below that range as a warning sign rather than a bargain. CARFAX's own research into used-car scams flags a below-market price as one of the most common signals of a seller offloading a car with a hidden problem. The strongest negotiating position is one backed by documented findings from an inspection or a history check, not a gut feeling about what 'sounds fair.'
Buying a used EV: how to check battery health firstOn a used EV, the odometer tells you much less than it does on a gas car: battery health, or State of Health (SoH), is the number that actually predicts remaining range and resale value. Telematics company Geotab's 2026 analysis of over 22,700 EVs found average degradation of about 2.3% capacity loss per year, but heavy fast-charging roughly doubled that rate. Always ask for the actual SoH reading rather than trusting mileage alone, and confirm in writing whether the battery warranty transfers to you as a second owner.
Buying a used hybrid: what to check before you buyA used hybrid needs the same checks as any used car, plus three hybrid-specific ones: the hybrid battery's actual state of health, the condition of a drivetrain that switches between an engine and electric motor, and whether the manufacturer's hybrid-battery warranty transfers to you. In Consumer Reports' 2026 U.S. survey, hybrids had 15% fewer owner-reported problems than gas-only cars. But J.D. Power's 2026 U.S. dependability study found hybrids at 213 problems per 100 vehicles against 198 for gas-only, a reminder that even within one market, different studies don't always agree. Get a dealer or independent hybrid specialist to run an actual battery health check before you commit, and compare the result against the manufacturer's own warranty terms rather than a rule-of-thumb percentage.- The most reliable cars according to the major 2026 studiesThere is no single, worldwide 'most reliable cars' ranking: every major reliability study covers one country and measures reliability a different way, so their results can't be merged into one list. In J.D. Power's 2026 U.S. Vehicle Dependability Study, Lexus ranked most dependable overall for the fourth year running; in Germany's ADAC Pannenstatistik 2026, the same year's breakdown data put Tesla Model 3 and an older BMW i3 among the least likely three-year-old cars to leave you stranded. Both are real, verified results: for different markets, measuring different things. Anyone who claims one global 'best car' ranking is combining data that was never designed to be combined.
The safest cars of 2026: what Euro NCAP and IIHS ratings really meanThere is no single 'safest cars in the world' list: Euro NCAP tests European market-spec vehicles and IIHS tests US/Canada-spec vehicles, using different protocols and different scoring systems, so their results can't be merged or compared. Euro NCAP's 2025 Best-in-Class awards went to six vehicles, including the Mercedes-Benz CLA and Tesla Model 3; IIHS handed out 63 awards for 2026 model-year vehicles under tightened crash-avoidance criteria. Always check the specific model year of a rating, too: Euro NCAP itself says a safety rating expires after six years because testing standards keep getting harder, not because the car changed.
EV range explained: why WLTP and EPA numbers differWLTP (used in Europe) and EPA (used in the US) test electric-car range with different lab procedures and different downward adjustments, so the same car gets two different official numbers: WLTP figures typically read about 10-15% higher than EPA figures for a comparable vehicle, though the gap varies by model. Neither number is 'wrong'; they're answers to different test questions, and on a used EV the real-world range also depends heavily on battery health, not just which label is on the window sticker.
Buying a car across borders: the extra risks of importsCars sold across borders carry meaningfully higher fraud risk than cars sold within their original country: a 2018 European Parliament study estimated 30-50% of cross-border used-car sales in the EU involved odometer manipulation, versus 5-12% for domestic sales, and more recent data from history-check provider carVertical found imported cars are 2.2 times more likely to have a tampered odometer than local ones. The core problem is verification: service records, inspection history, and write-off status all live in the exporting country's systems, which don't always talk to the country you're buying in.