Jeoul - AI Used-Car Pricing Platform with Guardrails and Model Monitoring

Dashboard, appraisal queue, valuation workbench, override approvals and model monitoring. Each of the 24 demo appraisals opens its own workbench with vehicle, history, condition and comparables tabs.

Within 8% of the model-based offer, not more than 15% below the comparable median, not above the segment's 90th percentile hammer price, and no drop of more than 10% below the instant range without a senior buyer.

Model monitoring compares each region's signed error with the national figure and marks it pass, warn or fail, next to the rolling 4-week error against hammer prices and input drift by feature.

24 appraisals across 8 statuses, 16 trims from Hyundai, Kia, Genesis, BMW and Mercedes-Benz, 11 override requests, 11 staff users and 6 monitoring alerts.

Prices That Depended on the Buyer

With no shared starting point, the same car got different quotes from different buyers, and margin swung from a loss on some segments to windfalls on others. Management could not tell whether the pricing, the inspections or the market was to blame.

Offers That Fell Apart After Inspection

An optimistic range that drops sharply once the car is inspected loses the seller. The design has to show what changed after inspection, such as an undeclared repaint or worn tyres, and flag a drop of more than 10% below the instant range.

Automated Prices and Personal Data

The 2023 PIPA amendments give people rights around fully automated decisions, including an explanation and the right to object. Consent is collected item by item, resident registration numbers are never collected, and training data has to be pseudonymised.

Title, Mileage and Model Drift

Cars with a registered mortgage or seizure cannot be bought until cleared, and declared mileage has to be checked against licensed history data. The model itself can drift as the fuel and maker mix changes, and can run low in one region without anyone noticing.