Buy a B10 Bi-Turbo on documented twin-turbo files and honest Buchloe paperwork first. Fastest-saloon folklore still sells, but a soft turbo pack or vague E34 leftover claim rewrites the budget fast.
For this November 5, 2026 guide I read Car Collector International: Alpina B10 Bi-Turbo guide and evo: Alpina review. The mechanical cautions below come from those pages; the order of checks and the questions for the seller are my own practical recommendations. Any price figures in those sources are market snapshots, not a valuation of the car in front of you. So, compare it with recent sales of the same specification and condition. I also kept the advice to things you can see, hear or ask for on a viewing day. If a seller rushes you past a cold start or blocks a lift inspection, treat that as a signal and walk away before you spend report money.
Know the Buchloe E34 family
CCI dates the B10 Bi-Turbo about 1989-1994 on the BMW E34 535i chassis with roughly 507 cars built at Buchloe. Pick a documented plaque before you travel.
Ask about twin-turbo and gearbox invoices
CCI wants continuous specialist files. Ask for the last invoice by shop and date.
Confirm production and options carefully
CCI treats the limited build as the identity marker. Match Alpina paperwork before any premium.
Inspect turbo plumbing carefully
Soft heat-related repairs rewrite the budget. Photograph undertrays.
Keep a dated note of the cold start
Write idle quality, gearbox engagement and any smoke. Our cold-start test guide helps you brief that first start.
Prefer continuous Alpina specialist files
CCI puts books and specialist invoices high on the list. Photos beat handshake stories.
Confirm Buchloe-built B10 identity carefully
CCI dates the B10 Bi-Turbo about 1989-1994 on the E34 535i with roughly 507 cars built. Match Alpina paperwork before any premium.
Ask about twin-turbo and gearbox invoices
CCI wants continuous specialist files. Ask for the last invoice by shop and date.
Inspect turbo plumbing and cooling carefully
Soft heat-related repairs rewrite the budget. Photograph trays before the bay is cleaned.
Keep a dated note of the cold start
Write idle quality, gearbox engagement and any smoke. Honestly, heat-related turbo faults show up late in a short loop.
Photograph tyre date codes and brake wear
Fresh stickers on old rubber still fail a real ownership budget. Write the DOT week and disc thickness.
Ask who can still support the car locally
Confirm an Alpina-literate BMW specialist booking window before you send a deposit.
Prove the identity before a deposit
Match the chassis number on the Alpina B10 Bi-Turbo to the title, any import papers and the plate on the car before you order a history report. Our VIN verification guide walks through that match, and imported-car report coverage sets expectations for cars that spent years overseas. Older chassis numbers may sit outside modern report databases, so confirm coverage before paying. NMVTIS covers U.S. title history only; it cannot replace foreign records or a physical inspection.
Get the repair scope in writing first
If the twin-turbo or Buchloe story looks soft, get an Alpina-literate specialist written estimate before you go further. Look, a seller PDF or a folder of photos is a starting document, not independent proof of condition. Ask the inspector for written findings with local estimates, split into safety work and cosmetic wishes. The NYC consumer-agency used-car guidance tells buyers to have an independent mechanic check the car, and our pre-purchase inspection checklist helps you set the scope. Keep a dated note of the drive, the temperatures and any noises, because a seller who disputes your findings later will ask what you saw and when. Keep copies of texts and emails with the seller in the same folder as the PPI write-up so the timeline stays clear.
We are a licensed CARFAX and AutoCheck reseller, not affiliated with CARFAX, AutoCheck or Experian. Guest reports have been about $5.50, member reports about $4.50 and a two-report bundle about $6.75; confirm the price at checkout because it can change. A report can miss unreported work, so keep the inspection appointment even when the history looks quiet.
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