Make, model, model year or build date, and the complete serial number or VIN, ideally as a photo of the plate. Model names cover several builds and the catalogu
The symptom in observable terms, when it appears, any fault codes read, what has been measured, and what changed just before it started.
The quote exactly as written: every line item, labour hours and hourly rate, each part and its price, shop supplies, taxes, and the shop's stated diagnosis.
Country plus state or province. Parts availability, warranty terms and repair statutes differ by place, and the refusal letter cannot be drafted without it.