CDB Mobile Diagnostics is a mobile vehicle diagnostic service covering Portsmouth and surrounding areas. Run by brothers Cyrus and Diesel Bull, we focus on giving drivers clear answers, honest reports, and convenient diagnostics without the hassle or cost of a garage visit.

We handle full system scans, fault‑finding, warning lights, resets, calibrations, and pre‑purchase checks — all done at your home or workplace using professional equipment.

We’re committed to growing, improving, and expanding our services to stay the most reliable option for our customers. Whether it’s a warning light, a fault that needs investigating, or a quick check before buying a car, we’re here to help.