Experience turbo lag and power surge during road tests; check for significant oil accumulation at the turbo intake and intercooler connections (slight oil vapor is normal); and use OBD to read the real-time boost pressure peak to see if it meets factory settings.

Absolutely not. The aging and cracking of rubber parts are inevitable over time and are a normal manifestation of vehicle depreciation. Our compensation only covers sudden and catastrophic mechanical failures, such as engine cylinder scoring or transmission gear breakage.

Yes. For bulk purchases, we can organize and package the core historical records (transfer records, maintenance summaries) for each vehicle. If an English version is needed, we can provide a basic machine translation reference, and human translation assistance for key technical terms.