For car buyers & owners
Start with the car's VIN
Or choose what you need
VehiLeaks and VehiSales are our sister sites for shoppers. Links marked “On … ↗” open in a new tab.
Car prices & market trends
What do cars really cost?
Latest reading
Reports built from live dealer listings.
Monthly market report How asking prices moved this monthFor developers & data teams
Vehicle data — listings, auctions, titles and images
Delivered to your cloud as files, through an API, or straight to your AI assistant.
# one row per listing
vin, year, make, model,
trim, price, mileage,
dealer, zip, photos
Developer API
One VIN in, full record and price band out.
# full record + price band
GET /v2/vehicles/{vin}
/pricing
# → 200 OK
{ "median", "rank", … }
AI assistant (MCP)
Ask Claude or ChatGPT about real listings.
THE SPECS GUIDE
Find your trim. See what changes.
Compare recorded engines, drivetrains and specifications, then open the VIN pattern that matches your car.
Use its full VIN to look up the vehicle and check the recorded specifications.
SIDE BY SIDE
Choose up to three VIN patterns. Each column describes one recorded pattern.
Swipe the table sideways to compare vehicles. Specification names stay visible.
| Specification | Quattro Premium Plus · AWD WAUB4AF4-M | Quattro Prestige · AWD WAUC4AF4-M | Quattro Premium · AWD WAUA4AF4-M | Quattro Premium Plus · AWD WAUB4BF4-M | Quattro Premium · AWD WAUA4BF4-M | Quattro Prestige · AWD WAUC4BF4-M |
|---|---|---|---|---|---|---|
| Engine | 3L 6-cyl | 3L 6-cyl | 3L 6-cyl | 3L 6-cyl | 3L 6-cyl | 3L 6-cyl |
| Power | 349 hp | 349 hp | 349 hp | 349 hp | 349 hp | 349 hp |
| Drivetrain | All-wheel drive | All-wheel drive | All-wheel drive | All-wheel drive | All-wheel drive | All-wheel drive |
| Transmission | Automatic | Automatic | Automatic | Automatic | Automatic | Automatic |
| Fuel | Gasoline | Gasoline | Gasoline | Gasoline | Gasoline | Gasoline |
| Body | Sedan | Sedan | Sedan | Sedan | Sedan | Sedan |
| Seats | 5 | 5 | 5 | 5 | 5 | 5 |
| Doors | 4-door | 4-door | 4-door | 4-door | 4-door | 4-door |
| Median asking price | $35,915 | $38,798 | Not recorded | Not recorded | Not recorded | Not recorded |
| Price observations | 54 | 20 | Not recorded | Not recorded | Not recorded | Not recorded |
| Price sample updated | Oct 18, 2026 | Oct 18, 2026 | Not recorded | Not recorded | Not recorded | Not recorded |
Missing data does not mean a feature is absent. Prices are advertised asking prices for each pattern’s own sample, not completed sale prices or a trim-wide average.
EXPLORE THE LINEUP
Grouped by recorded trim, with engine and drive variants underneath. Open a variant to see every source pattern.
2021 S4
349 hp · Sedan · 5 seats
No qualifying asking-price sample for this pattern.
349 hp · Sedan · 5 seats
No qualifying asking-price sample for this pattern.
Limited record — some specifications may be missing.
2021 S4
349 hp · Sedan · 5 seats
No qualifying asking-price sample for this pattern.
Limited record — some specifications may be missing.
349 hp · Sedan · 5 seats
$35,915 median asking price
54 price observations · Updated Oct 18, 2026
2021 S4
349 hp · Sedan · 5 seats
$38,798 median asking price
20 price observations · Updated Oct 18, 2026
349 hp · Sedan · 5 seats
No qualifying asking-price sample for this pattern.
Source: manufacturer specifications decoded through NHTSA vPIC, alongside VIN and listing records in our dataset. Trim groups are for browsing; shared labels do not establish identical equipment. Confirm options on the specific vehicle.
THE MARKET VIEW
Explore model-year asking prices and available market history.
BEFORE YOU CHOOSE
Equipment, fuel economy and safety results can vary with the vehicle’s engine, drivetrain and options.
Check the tested body style and drivetrain before comparing crash ratings.
Check NHTSA ratings → Check recalls by VIN →Match the engine and drivetrain to an EPA entry. A model-year fuel estimate may describe a different variant from yours.
Find the matching EPA vehicle →Compare current asking-price samples. Differences between model years are not a forecast of how one car will depreciate.
S4 prices by age → Asking-price history →