How our DealScore works
Most marketplaces rate prices but hide the maths. We do the opposite: here is exactly how every score is calculated β because a score you can't verify is a score you shouldn't trust.
1. We compare each car to its real market
For each scored listing we build a cohort of comparable cars in the current dataset β same make, model, fuel and gearbox, within one model year. We fit a robust price model against age and mileage; the gap between that estimate and the asking price informs DealScore. Low-comparable cases are labelled with lower confidence.
Crucially, we include a country adjustment. A car listed in a cheaper market isn't automatically a deal β our model separates "cheap for its own market" (a real find) from "listed in a low-price country" (just geography). The two are different questions, and we answer them separately.
2. The score means exactly what it says
The DealScore is anchored to the actual percentage below market β not a hidden weighting. Roughly:
- Exceptional 90β100 β 18%+ below the car's fair market value
- Great 80β89 β 12β18% below
- Good 70β79 β 7β12% below
- Fair 50β69 β 2β7% below
If a car has too few genuine comparables, we refuse to score it and label it a rare configuration β we would rather show nothing than fake confidence.
3. We screen out what looks too good to be true
A price far below everything else is usually not a bargain β it's a damaged car, an installment figure, an auction start price, or a scam. Our headline deals pass several checks first: damaged and salvage cars are moved to their own clearly-labelled segment; installment/auction prices are detected and set aside; and anything suspiciously cheap for a nearly-new car is held back for verification instead of shown as a "deal".
4. Vehicle history still requires independent verification
This catalog does not contain enough repeat-observation evidence to make an odometer-history claim. Treat the absence of a warning as unknown, not clean: check service records, inspection history and an independent VIN report before purchase.
5. What it costs to actually own it
A cheap car abroad isn't cheap if importing it costs thousands. Where the current model supports a destination, a listing may show an estimated landed-cost range covering transport and modeled registration taxes. Final duties are set by the relevant authority at clearance; verify the estimate before purchase.
Our pledge
Dealers cannot pay for placement. Ranking is data-derived. SonarDeals does not sell cars; a source link is shown only when the catalog has one available. Modeled costs and optional services never change rank.
The catalog is continuously refreshed against live source data. Listing timestamps are not displayed in this build; always recheck the original source before purchase.