Alpina B6 E30 Buying Guide

Buy an E30 B6 on documented Alpina six files and honest 2.8, 3.5 or 3.5 S paperwork first. M3 folklore still sells, but a soft rear subframe or vague Sportgetriebe leftover claim rewrites the budget fast.

For this November 5, 2026 guide I read Car Collector International: Alpina B6 E30 guide and evo: Alpina review hub. 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 2.8, 3.5 and 3.5 S families

CCI dates the E30 B6 line from 1984 across those cores. Pick a documented car before you travel.

Ask about Alpina six and gearbox invoices

CCI wants continuous specialist files. Ask for the last invoice by shop and date.

Confirm 3.5 S claims carefully

CCI treats 3.5 S cars as meaningful premiums. Match Alpina chassis paperwork before you bid.

Inspect rear subframe carefully

Soft bushings or cracked mounts 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 2.8, 3.5 and 3.5 S identity carefully

CCI dates the E30 B6 line from 1984 across those cores. Match Alpina chassis paperwork before any M3 leftover claim.

Ask about Alpina six and gearbox invoices

CCI wants continuous specialist files. Ask for the last invoice by shop and date.

Inspect rear subframe carefully

Soft bushings or cracked mounts rewrite the budget. Photograph the cradle before the bay is cleaned.

Keep a dated note of the cold start

Write idle quality, gearbox engagement and any smoke. Honestly, heat-related six-cylinder 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 B6 E30 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 engine or subframe story looks soft, get an Alpina-literate BMW 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.

Sources

• Car Collector International: Alpina B6 E30 guide
• evo: Alpina review hub
• U.S. Department of Justice: NMVTIS
• NYC DCWP: used-car buying tips