I built an engine to reverse-engineer car dealership lease math

Name: I built an engine to reverse-engineer car dealership lease math
Availability: InStock
Author: amirjavid

by amirjavid·Feb 25, 2026·2 points·1 comment

AI Analysis

●●SolidSolve My ProblemDark Horse

Verifies lease math to the cent against real dealer documents—transparency tool, not product.

Strengths

•Formula is deterministic and fully transparent: depreciation + rent charge, no black boxes.
•Validated against hundreds of real VINs, signing documents, and tax structures across three states.
•Identifies money factor markup, the single biggest lever dealers exploit in lease negotiations.

Weaknesses

•Only a blog post demonstrating the engine; no working calculator or consumer-facing tool yet.
•Audience is narrow: active lease shoppers willing to learn the formula—most use Edmunds or TrueCar.
•No evidence this prevents dealer wins; verification doesn't equal negotiation power.