/
3.0si Roadster (2006-2008)

Can you afford a 2006-2008 BMW Z4 3.0si Roadster in 2025?

# 2006-2008 BMW Z4 3.0si Roadster The Z4 3.0si roadster represents BMW's sporty two-seater featuring a naturally aspirated 3.0-liter inline-six producing 255 horsepower. This first-generation E85 model showcases controversial "flame surfacing" styling by Chris Bangle, with dramatic creases and an aggressive stance. Reviewers praise its communicative steering, balanced 50/50 weight distribution, and characterful engine, though some criticize the firm ride and cramped cabin. The Z4 became famous for its polarizing design and pure roadster experience without a fixed-roof variant initially. Today, it suits driving enthusiasts seeking an affordable, engaging weekend convertible with BMW's legendary inline-six smoothness. The naturally aspirated engine offers reliability advantages over turbocharged successors. Best for spirited backroad driving rather than daily commuting, with typical BMW maintenance costs expected.

The 2006-2008 BMW Z4 3.0si features typical BMW premium maintenance costs including expensive parts and specialized service. Common issues include electronic water pump failures ($800-1,200), window regulator problems, and valve cover gasket leaks. Insurance runs higher due to sports car classification. Despite reliability concerns common to BMWs, the naturally-aspirated engine avoids turbocharged complexity issues.

Price Range
$15,000 - $32,000
Market price for 2025
Estimated Annual Costs
Insurance:$800
Maintenance:$2,800

Affordability Calculator

We have preconfigured our calculator for this vehicle

Enter Your Information

Calculation Type

Vehicle Details

$

Payment Method

Additional Details

Loan Parameters

$

Cost Adjustments

$

Additional Monthly Costs

$
$
$

Why Use This Calculator?

Unlike calculators from banks or dealerships that may encourage overspending, our tool provides neutral, conservative estimates based on proven financial principles. Whether you're financing or paying cash, we help you understand what you can truly afford.

For Loan Financing:

  • Safe Range: Follows the , ensuring you can comfortably afford your car payment
  • Stretch Range: A moderate approach that balances affordability with your goals
  • Lender Max: What banks typically approve, but may strain your budget

For Cash Purchases:

  • Conservative: Uses 5% of net worth, maintaining strong financial reserves
  • Safe: Uses , following the recommended guideline
  • Stretch: Uses 15% of net worth, for when you want to prioritize the car

Built to help you make informed car buying decisions. Always consult with a financial advisor for advice.

This calculator provides estimates only and should not be considered financial advice.

© 2025 Archipelago Labs Inc. All rights reserved.