Manufacturer first
Every vehicle specification on EVcarsguide starts with the manufacturer's own UK website. Dimensions, battery capacity, charging speeds, and the rest come straight from the people who built the car - not lifted from another comparison site or aggregator.
When a manufacturer leaves a gap
Occasionally a carmaker simply doesn't publish a figure. Tesla, for instance, doesn't quote a battery capacity in kWh, peak power, or torque. Leaving those fields blank would make the car impossible to compare fairly, so in those specific cases we fill the gap from independent sources - and only when at least two of them agree within a sensible tolerance.
Where we've done this, the spec carries a short note on the car page telling you the manufacturer doesn't publish that figure and that it's been confirmed from multiple independent sources. We'd rather show you a clearly-flagged corroborated number than a blank.
Manual review process
After data is collected from manufacturer sources, every entry is manually reviewed before it goes live on the site. This review checks for:
- Obvious errors or outliers (e.g., a battery capacity that doesn't match the model range)
- Unit consistency (millimetres, kilograms, kilowatts - we standardise everything)
- Completeness - flagging any gaps in key fields like dimensions, range, or charging speed
- UK-specific accuracy - confirming specs match the UK-market version, not US or EU variants
Tracking completeness and gaps
Behind the scenes we track how many of the key specification fields we've been able to confirm for each vehicle, so we know where the gaps are - a niche figure like towing capacity, or interior dimensions a manufacturer hasn't published. We prioritise filling those gaps for the most popular models first.
Last updated dates
Car detail pages show when their data was last updated. When a manufacturer updates their specifications (e.g., a mid-cycle refresh or price change), we aim to reflect the change as quickly as possible.
Rankings and scores
Our Best EV rankings and guide scores are calculated algorithmically from the specification data - not from editorial opinion. Each score page explains exactly which fields are used and how they're weighted.
Because rankings are generated from live data, they update automatically as new cars are added or specifications change.
Pricing, sentiment and estimates
Some of what you'll find here isn't a manufacturer spec, and we source it differently - so it's worth being clear about:
- Used and lease pricing is gathered from a wide range of independent dealer and leasing listings across the UK, then matched to the right model and tracked over time. Prices move daily, so treat them as an up-to-date guide rather than a quote.
- Owner sentiment is summarised with AI assistance from public owner discussions and forums. It reflects what owners are saying, aggregated into themes - not our own opinion.
- Battery health and running-cost figures are estimates produced by our own models from published specifications. They're there to help you reason about real-world ownership, and we label them as estimates wherever they appear.
- The vehicle illustrations are drawn in a consistent house style rather than photographed - the reasoning is on our about page.
What we don't do
- We don't accept payment or sponsorship to influence rankings or scores
- We don't lift specs wholesale from other comparison sites or databases - the manufacturer is always our starting point
- We don't publish unverified or estimated data without flagging it as such
Found an error?
If you spot an incorrect specification, please let us know. We take data accuracy seriously and will investigate and correct any confirmed errors promptly.