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Quote audit

Agent quoted $3,000 for Mercedes air suspension — what to check first

2026-05-06 · 4 min read

A $3,000+ air suspension quote is not automatically wrong. But it should not be accepted blindly, especially if the car only sinks overnight and still drives normally.

Owner takeaway

Do not approve a major repair from a vague symptom alone. Ask what test confirmed the failed part, then compare itemised quotes.

First question

Ask whether a leak test was done. Which corner dropped? Did they test the valve block, air line and bag separately?

Second question

Ask for proof. A photo, video, scan result or pressure test result is better than a one-line quote.

Third question

Ask if a cheaper confirmed fix exists. Valve block leaks can look scary but may not require changing full struts.

When to approve

Approve the expensive repair only when the failed part is identified and the quote is itemised.