How we verify EV data

EVz turns manufacturer brochures into structured, comparable data. This page explains exactly where that data comes from, how we treat real-world range, and what each verification label on a listing means. Our goal is that every figure on the site is traceable to a source and dated.

Where our data comes from

Specifications and prices come from official brand sources - brochures, spec sheets and official listings - cross-checked against reputable outlets for tested figures. Each model records its source and the date it was captured, so any figure can be traced back to where it came from and when.

Real-world range vs ARAI-claimed range

We record the manufacturer's ARAI-claimed range and, separately, a real-world range figure based on field conditions. We never present the claimed figure as real-world. Where both are known, our listings show the gap between them, because that gap is what actually affects a buyer.

What our verification labels mean

• Extracted - AI-parsed and not yet checked by a person. Extracted data is not published or indexed; it waits in a review queue.
• Sourced - gathered from an official brand listing or a reputable outlet, with the source link recorded, but not yet individually re-checked against the document by a person. Sourced models are published and clearly badged "Sourced", so their provenance and its level are always visible.
• Human-verified - an EVz reviewer has checked the data against the source document.
• Brand-confirmed - the manufacturer has confirmed the figures directly.

Freshness

Every model shows the date its data was sourced. When a brand updates a brochure or price, we re-check and re-date the model.

What we publish

Only models that clear our data-quality bar are published: a sourced, human-verified or brand-confirmed specification (sourced models carry their source link), a price, and at least one differentiated data point such as a real-world range figure or a citable subsidy fact. Anything that does not clear the bar stays unpublished rather than shipping thin or unverified.

Found something wrong? See our corrections log.