BMW 325i Cabriolet E30 Alpina B6 3.5 Umbau (1991)
1991 BMW 325i Convertible Alpina B6 3.5 conversion with original Alpina engine, limited-slip differential, Bilstein suspension, inspection rating: 2
Overview
The provision is 5% + VAT of the sales price and at least 500 € + VAT.
BID HISTORY
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Start sellingBMW 325i Cabriolet E30 Alpina B6 3.5 Umbau (1991)

Kickdown's Take
by Moritz HelbichThis E30 convertible features a unique body build with numerous original Alpina parts and, as a highlight, an Alpina 3.5-liter six-cylinder engine producing 254 hp. This transforms the BMW into a true powerhouse convertible! It also includes additional technical upgrades such as a Bilstein suspension and a limited-slip differential. The car is in excellent condition, both inside and out. Perfect for anyone who finds a standard E30 too ordinary!
Kickdown Check
- On-site kickdown assessment completed
- 135 photos
- Video including engine running
- A 2024 appraisal report is available, with a condition rating of 2 and a market value of €45,500
- Mileage of 163,615 kilometers, partially verifiable
Facts & Specifications
- Year of manufacture: 1991
- Engine: Original Alpina 3.5-liter inline-six (Type B11/3) with 254 hp
- Transmission: 5-speed manual transmission (from BMW 535i E34)
- Exterior color: Diamond Black Metallic
- Interior: Leather in special Cinnamon color
- TÜV valid until August 2026, H-license plate
- Equipment:
- Bilstein sport suspension with strut brace
- 25% limited-slip differential (M3 E30)
- Stainless steel exhaust system with manifold
- Alpina front spoiler and design elements
- Alpina alloy wheels (16 inches)
- Sport leather steering wheel with Alpina emblem
- Alpina additional instruments
- Radio-CD navigation system
- Convertible top in special color
Condition
Exterior
- The exterior is painted in Diamond Black Metallic.
- The vehicle has been partially repainted
- The paint and body are in very good condition with only minor age-related signs of wear
- There are no known damages or defects on the body
- There is no known rust
- It is equipped with Hankook tires from 2018 with good tread depth
- The cinnamon-colored convertible top was replaced in 2017 and is therefore in very good condition
Interior
- The car features a high-quality leather interior in the special color Cinnamon.
- The interior is in restored, nearly like-new condition
- There are no known damages to the interior
Mechanics
- The vehicle is ready to drive immediately. There are no known technical defects
- Converted to an original Alpina 3.5-liter engine with 254 hp
- Chassis, drivetrain, and exhaust system comprehensively optimized
- The modifications are registered
- The 5-speed manual transmission shifts flawlessly
- Regular maintenance has been performed
- A service should be performed in the near future
History
Ownership history
- 2024 to present: 7th owner
- 2015 to 2024: 6th owner
- 2006 to 2015: 5th owner
- First delivery in Germany
Service history
- Regular maintenance performed
- A comprehensive investment history dating back to 2015, including invoices, is available
Documents
- German vehicle documents (Images 127 to 131)
- Appraisal report with a market value of €45,500 from 2024 (Images 132 and 133)
- Alpina engine badge (Image 134)
- Investment history (Image 135)
- Invoices (Images 136 to 186)
- TÜV reports (Figures 187 to 190)
Operating permit (Images 191 to 196)
Summary
For sale is an exceptional Alpina B6 3.5 conversion based on a 1991 BMW 325i Convertible in Diamond Black Metallic exterior paint and featuring a leather interior in the special color Cinnamon. The vehicle has a mileage of 163,615 kilometers, part of which is verifiable. The E30 has undergone extensive technical upgrades. At its heart is an Alpina 3.5-liter inline-six engine producing 254 hp, paired with a 5-speed manual transmission. The drivetrain is complemented by a limited-slip differential, a Bilstein sport suspension, and a stainless steel exhaust system. Visually and technically, the vehicle is in very good condition. The nearly mint-condition interior in the rare Cinnamon color and the refurbished soft top underscore the vehicle’s high overall quality. A valuation report confirms this condition and indicates a market value of €45,500. A rare opportunity to acquire a custom-built and technically fascinating Alpina vehicle.
Vehicle videos
Kickdown check
- Expert report available
- Kickdown photographer was on site
- Video of the vehicle available
- Main inspection
Transport
If you have any questions about shipping or transportation, please do not hesitate to contact us at shipping@kickdown.com . We would be happy to provide you with a non-binding offer for the transport of your new vehicle.
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