This page explains how Clear Auto Choice calculates comparison figures, financing payments, total cost, and vehicle rankings — and how confirmed facts are kept separate from estimates.
Clear Auto Choice does not turn missing information into made-up certainty. Confirmed facts, published specifications, calculations, estimates, and market rankings are kept distinct so you can understand what a number actually represents.
A figure is labeled Confirmed only when it comes directly from a listing, a manufacturer's published specification, or another identifiable source. Information derived from a calculation or inference is labeled Estimated. When information cannot be verified, we do not present it as confirmed simply to make a vehicle look more complete.
A vehicle identification number lookup can provide vehicle information such as year, make, model, trim, and drivetrain from a public vehicle database, but it does not establish the asking price or other listing-specific facts.
When a listing link is fetched, the tool reads information the listing publishes and may draft fields such as price, mileage, and manufacturer suggested retail price. Drafted listing information is not automatically treated as confirmed. Fields that require user verification remain clearly identified until checked.
All-in price is the one field required to place a vehicle into a cost comparison. Other information may be incomplete. We do not fill missing vehicle information with invented values merely to produce a score.
When a factor cannot be calculated reliably because required information is missing, that factor is handled as missing rather than being silently converted to a zero or an assumed vehicle characteristic. The inventory ranking also records which information was available and, where applicable, the source used to supplement it.
Clear Auto Choice can use published manufacturer and other authoritative vehicle-specification data to supplement incomplete listing information. Published data may contain multiple model years, trims, drivetrain configurations, and related variants. The system matches published specifications to inventory vehicles using the vehicle's year, make, model, trim, and drivetrain where those fields are available.
Published data is supplemental vehicle specification information; it does not replace listing-specific facts such as the actual asking price, mileage, condition, or days on market.
When published data supplies or supplements a vehicle field, the vehicle data retains provenance so the application can distinguish information obtained from the listing from information obtained from published specifications. A match is not treated as confirmation of a fact that the publication did not actually establish.
Formula:
(original manufacturer suggested retail price − all-in price)
÷ original manufacturer suggested retail price
Ranking uses the unrounded decimal rather than the rounded display percentage. When an original manufacturer suggested retail price is unavailable, the vehicle does not receive a fabricated discount percentage.
The all-in price is the listing price plus any shipping or documentation fee specifically named by the listing. It excludes sales tax, title fees, and registration unless those amounts have separately been entered into the total-cost calculation.
Formula:
M = P × r(1+r)n ÷ ((1+r)n − 1)
Where P is the financed principal after the down payment, r is the annual interest rate divided by 12, and n is the loan term in months. You set the down payment, term, and rate in the tool. The calculation is for comparison purposes and is not a loan offer or pre-approval.
Total cost through payoff is intended to show the complete modeled cost over the selected financing term rather than only the vehicle's purchase price or one year's expenses.
Insurance and warranty amounts are scaled over the modeled loan period when those figures are supplied. We do not substitute a guessed insurance or warranty amount simply because a field is blank.
Tax, title, and registration may use an estimate when a required amount has not been entered. Such a result is clearly labeled estimated.
The Comparison Tool and the EV Inventory Value Rank are separate ranking systems and should not be confused.
The Comparison Tool evaluates the vehicles in the comparison using the factors available to that comparison, including price relative to original manufacturer suggested retail price, warranty strength, vehicle age, and total cost through payoff. Factors are normalized relative to the vehicles being compared and combined using the comparison weighting controls.
If a factor cannot be calculated because required information is missing, the tool does not invent the missing value. The applicable factor is excluded according to the comparison rules, and the interface identifies missing information.
The EV Inventory Value Rank is a separate, dynamic market-ranking system. It evaluates eligible vehicles against the current inventory rather than assigning a permanent score to a vehicle model or trim.
How strong is this particular listing as a purchase compared with the other eligible electric vehicles currently available?
The ranking considers multiple dimensions of the listing and vehicle, including:
The system uses comparable vehicles where sufficient data is available. Comparable groups can become broader when a sufficiently populated close match is unavailable. This allows the ranking to remain dynamic as inventory changes without pretending that an unrelated vehicle is an exact match.
Value Score is the underlying assessment expressed on a 0–100 scale.
Value Rank is the vehicle's position among the eligible inventory after the current Value Scores have been evaluated and ordered. For example, Value Rank #1 of 1,466 means the vehicle currently occupies the first position among 1,466 eligible inventory vehicles.
Because the inventory changes, a vehicle's rank can change even when its own listing has not changed. A newly added vehicle, a price change, updated published specifications, a listing disappearing, or improved vehicle data can change the competitive landscape.
The rank therefore represents the vehicle's position at the time the current inventory is evaluated; it is not a permanent award attached to the model or trim.
The numeric Value Score is accompanied by a plain-language value tier. The tier is derived from the current Value Score and is intended to make the numerical result easier to interpret. It does not replace the underlying score or rank.
The current system distinguishes the highest tier from the next tier rather than labeling every vehicle scoring in the 90s as exceptional. The displayed tier always follows the current Value Score thresholds used by the ranking engine.
Value Rank is intentionally dynamic. There is no single fixed formula that says a particular model, trim, age, or price will always receive a particular rank.
The same vehicle can move up or down as market inventory changes because Value Rank is a comparison against the current market set. This is important: a vehicle that is an excellent deal today may have a different rank tomorrow if comparable listings, prices, specifications, or inventory volume change.
The ranking system uses available confirmed and published specification information and identifies where important information is unavailable. A missing field should not be interpreted as a zero, a negative value, or proof that the vehicle lacks the characteristic.
Where published data can reliably supply a missing specification, the system may use that published information and retain its provenance. Listing-specific information remains separate from published vehicle specifications.
Value Rank is a market-value decision aid. It is not a guarantee that the highest-ranked vehicle is the best vehicle for every buyer.
A buyer who needs three rows of seating, a particular range, a particular body type, towing capability, a specific drivetrain, or a specific budget may reasonably choose a lower-ranked vehicle that better fits those needs. Value Rank evaluates market value; it does not replace the buyer's requirements.
A high rank does not guarantee mechanical condition, future resale value, financing approval, or that a listing will remain available. Buyers should verify listing information, vehicle history, recalls, condition, and seller representations before purchasing.
We spell out important terms rather than relying on unexplained abbreviations. The goal is that the methodology remains understandable even if you are not an automotive or financial professional.