What peopleask us most.

The RV Model is a valuation engine for used vehicles (electric, hybrid, petrol and diesel) across 13 European markets. Enter a car's details (make, model, trim, year, mileage) and it returns the current market value plus a 6-year projection, always with a calibrated confidence band.

Credits are the platform's unit of use. Every action consumes a fixed amount:

• Individual valuation: 1 credit
• Per-vehicle forecast: 1 credit
• Portfolio reforecast: 1 credit per vehicle

The free account includes 5 welcome credits to try the engine. You can top up your balance with credit packs whenever you need to.

No. Unused credits never expire as long as your account stays active.

The model trains on roughly 1.5 million active listings plus several million historical records across 13 countries, and it's retrained every few days. Accuracy is measured in a blind test after every training run and published per country; showing our numbers is part of the product. Every valuation ships with its confidence band so you can see the likely range of values.

We run a blind backtest: we take vehicles that already sold, hide the real sale price from the model, ask it for a valuation, and compare against that observed real price — not the listing price. It's recalculated automatically after every retraining run, over thousands of sales per country.

Every figure comes from a blind backtest over thousands of real sales, re-measured after every training run. This is the same data behind the chart on the home page.

We combine aggregated market data across 13 countries, official brand channels, official European registries (RDW, VCA, EEA), new-vehicle list prices (PVPR, by year and trim) and real-sale detection. Data refreshes automatically every 24 hours.

Yes. The REST API serves valuations across all 13 countries, with full traceability of the adjustments applied and published accuracy. If you have a B2B use case (dealership, insurer, leasing company, marketplace), get in touch for your API key and volume terms.

Yes. Signing up gives you access to WorldMonitor and 5 welcome credits to try real valuations. No credit card required.

No. ARST Data has no subscription plans: you create a free account with 5 welcome credits and buy credit packs as you need them. Unused credits never expire as long as your account stays active.

No. The model covers electric, hybrid, plug-in hybrid, petrol and diesel vehicles across all 13 markets. Electric vehicles in Spain were the starting point; today coverage spans the entire used-vehicle market in every country where we operate.

Our systems aggregate data from the leading second-hand portals across all 13 European markets every 24 hours. Valuation models retrain automatically once enough new data has accumulated, typically every week. The Intel News feed and WorldMonitor update several times a day.

Every valuation returns three prices: P10 (conservative), P50 (market value) and P90 (optimistic). These percentiles are calibrated on the real price distributions of comparable vehicles currently listed for sale, not on catalogue prices. The band narrows when there are many similar listings and widens in segments with low liquidity.

The RV Model covers 13 European markets, each with its own valuation panel: Spain, Germany, France, Italy, the Netherlands, Austria, Belgium, Portugal, the United Kingdom, Poland, Sweden, Norway and Finland.

Market data carries a delay of up to 24-48 hours depending on the country. We don't serve real-time prices straight from listing portals. Instead, daily snapshots feed the statistical models. If your use case needs lower latency, get in touch to explore a custom integration.

WorldMonitor is an interactive geopolitical map that aggregates country-level risk indicators: political tensions, active conflicts, sanctions, currency volatility and macroeconomic signals relevant to fleet, leasing or investment decisions. It's available free with registration.

Yes. For large portfolios or recurring bulk reforecasts, get in touch for a custom B2B agreement with API access and negotiated volume pricing. Write to us at info@arstdata.com.

You can email us at info@arstdata.com or use the contact form. We reply within 24 hours on business days.