2.5si Roadster (2006-2008)

Can you afford a 2006-2008 BMW Z4 2.5si Roadster in 2025?

# 2006-2008 BMW Z4 2.5si Roadster The Z4 2.5si represents BMW's entry-level roadster from the model's polarizing first-generation redesign. Powered by a 215-hp 2.5-liter inline-six, it offers classic BMW handling precision and a distinctive "flame surfacing" design that divides opinion—some find it dramatic, others overwrought. Reviewers praise its sharp steering, balanced 50/50 weight distribution, and buttery smooth engine, though criticize the firm ride and limited trunk space. The 2.5si feels underpowered compared to 3.0si variants, with 0-60 mph in about 6.5 seconds. Today, it suits enthusiasts seeking an affordable, pure-driving roadster experience for weekend backroad carving. Reliability is generally solid, though electrical gremlins and expensive BMW maintenance persist. Best for singles or couples prioritizing driving engagement over practicality, particularly those who appreciate BMW's classic naturally-aspirated six-cylinder character before turbocharging became universal.

The Z4 2.5si features BMW's naturally aspirated N52 engine, which is generally reliable but requires regular valve cover gasket replacements ($500-800). Convertible top mechanisms can fail ($1,500-2,500). Expect premium fuel, synthetic oil changes, and higher insurance costs typical of German roadsters. Overall maintenance costs are moderate for BMW standards.

Price Range

$12,000 - $25,000

Market price for 2025

Estimated Annual Costs

Insurance:$800

Maintenance:$2,800

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