Modern European vehicles are complex networks of mechanical systems, electrical architectures, and software. When something goes wrong, guessing is expensive. At Onyx Prestige, we use a methodical, data-driven approach to diagnostics that identifies the real problem the first time.
Our diagnostic toolkit includes factory-level scan tools, oscilloscopes, multimeters, pressure testers, leak detection systems, and borescopes. We combine this with real-world experience accumulated over 25 years in the trade.
We don’t charge you for parts we guessed at. We diagnose, present the evidence, discuss the options, and proceed only when you’re informed and comfortable with the path forward.
What We Do
- Factory-level scan tools for all European makes
- Oscilloscope and electrical system diagnosis
- Smoke test for vacuum and intake leaks
- Compression and leak-down testing
- Borescope inspection
- AC performance testing
- Detailed report with findings and recommendations
Frequently Asked Questions
My check engine light is on — can you diagnose it?
Yes. We can read the fault codes, investigate the root cause, and provide a clear diagnosis with recommended repair options.
How long does a diagnostic appointment take?
Most diagnostic sessions take 1-2 hours depending on the complexity of the issue. We'll call you with findings before proceeding with any work.
What if you can't find the problem?
We've been doing this for 25 years. If we can't find it, we'll tell you honestly and suggest the next-best step — whether that's further investigation or a specialist referral.