The EV cost intelligence platform
Every meaningful change to EVCostIQ's data, methodology or pages, dated and in plain language — newest first. Factual errors are logged separately on the about page's corrections log.
Subscribe via RSS · rate refreshes land here monthly; a rate or engine change that flips a published verdict always gets an entry in the same release.
All 52 state residential electricity rates updated from the EIA Open Data API (period 2026-05, previously 2026-04). Every US total, verdict and break-even recomputed from the new rates. NHTSA recall data refreshed the same week (85 vehicles, as of 2026-07-28).
Data and provenance. The battery-replacement matcher existed as four copies in four page generators and had drifted; one copy scored partial model-name matches as exact and published 40 wrong out-of-warranty battery figures across 20 markets (Model 3 prices on Model Y pages, Ioniq 5 on Ioniq 6, ID.4 on ID.3, ID.7 and ID.Buzz). All four were replaced by one shared implementation that matches whole words only and prints nothing when nothing matches; every affected page was rebuilt. Thirteen vehicles carried a depreciation curve and source citation with no backing row in the residual source file; the rows were restored and the residual step now fails the build rather than ship a sourced-looking figure with no source. Both are written up in the corrections log on the about page. No 5-year total or verdict changed in either case, though rebuilding the restored curves moved the year-by-year lines on 12 models' cost charts. Pages. The U.S. state hubs were rewritten: every hub now prices the full fleet at that state's own rates, with its own registration and EV road-use fees, electricity history and head-to-head flip count. In the translated markets each model page now picks its own segment rival instead of a market-wide default, and the insight prose is generated from that pair's numbers. Wording. Every sentence that states whether this site carries advertising is now generated from the same switch that decides whether any ad code is emitted; on this build no ads run, and the privacy, terms, about and Impressum pages say so while still setting out in full what Google AdSense and third-party vendors would set if it were switched on. The fleet counts on hub pages were relabelled to say what each one counts (models priced, models with their own cost page, vehicles selectable in the calculator) instead of implying a per-state fleet. The maintenance paragraph on U.S. model pages now derives its comparison from the rival priced beside it in the breakdown table, not from the powertrain-average rate, so the sentence and the table can no longer disagree.
We retired two thin page tiers: the U.S. per-state model and comparison pages (about 5,300 URLs) and the English expat duplicates of translated model and comparison pages (about 1,150 URLs). Retired URLs redirect permanently to their national or market-hub equivalents, and every U.S. state keeps its hub page with every model priced at that state's rates. In the same release we added twelve new EV-vs-rival comparisons so every electric model we price has a head-to-head, flip-condition insights on comparison pages (the annual mileage and home electricity price at which a verdict changes), price-first page titles that state each model's list price, an expanded about page with an independence statement and a public corrections log, and this changelog. The cost engine and its assumptions are unchanged; where a published break-even figure moved, it is because we replaced an iterative solver with an exact closed-form calculation, which can shift a figure by at most one 500-mile or 500-km rounding step.
See also: the methodology (how every figure is computed and sourced) and the EV vs Gas 5-Year Cost Index 2026.