🚗 Used Car Market Simulation
Round: 1
5
🍑 Peaches (Good Cars)
5
🍋 Lemons (Bad Cars)
$7,500
Market Price
50%
Avg Quality

📊 The Adverse Selection Spiral

Buyers can't tell peaches from lemons. They offer the AVERAGE value. But this price is too low for peach sellers...
$0 (Lemon value) $10,000 (Peach value)

🍋 MARKET COLLAPSE!

Only lemons remain. Good cars have been driven out by information asymmetry. Buyers, knowing this, won't pay anything — the market has failed.

This is why we need warranties, certifications, and reputation systems!

🔍 Information Asymmetry

🚗
Seller
Knows quality
🤔
Buyer
Doesn't know
⚠️ Asymmetric Information

Sellers know if their car is a lemon. Buyers can only guess based on market averages. This creates a feedback loop that destroys the market for quality.

💡 Market Solutions

  • 🛡️ Warranties Only sellers of good cars can afford to offer them
  • 📋 Certifications Third-party quality verification (CPO programs)
  • ⭐ Reputation Systems Yelp, Carfax, seller ratings
  • 📜 Disclosure Laws Lemon laws forcing defect disclosure

🌍 Beyond Used Cars

  • Health Insurance: Sick people more likely to buy → premiums rise → healthy leave
  • Credit Markets: Risky borrowers seek loans → rates rise → safe borrowers leave
  • Labor Markets: Low-ability workers accept low wages → high-ability workers leave
Source: Akerlof, G.A. (1970). "The Market for 'Lemons': Quality Uncertainty and the Market Mechanism." Quarterly Journal of Economics, 84(3), 488-500.