A 1985 BMW M635 CSi (E24) is for sale in metallic blue with a beige interior.

Highlights:

• Rare model: BMW M635 CSi with M88 engine, known as "the first M6"
• Owned by the seller since 2012
• Engine overhaul in 2013 by Wolfgang Tegethoff
• Extensive maintenance work since 2012 (including exhaust, radiator, alternator)
• 2017: Underbody dry ice blasted, welded, painted, and sealed
• 2020: New chassis
• Investments over €20,000
• New headliner and carpet installed in matching colors

General information about the vehicle

• Year of manufacture: 1985
• First registration: Germany, 09/1985
• Location: 73734 Esslingen am Neckar, Germany
• Number of previous owners: unknown (owned by the seller since 2012)
• Accident-free: unknown
• H license plate
• TÜV until 07/2027
• Ready to drive, but currently not registered (currently being driven on a red number plate)

Model history

The BMW M635 CSi was developed by BMW Motorsport GmbH and produced by BMW AG from 1984 as the top model in the E24 series. It was equipped with the legendary M88/3 engine from the BMW M1 – a 3.5-liter inline six-cylinder with four-valve technology, single throttle valves, and 286 hp. In combination with a reinforced Getrag sports transmission, limited-slip differential, modified suspension, and larger brakes, the M635 CSi offered sports car-level performance. Visually, it stood out with spoilers, painted exterior mirrors, and exclusive TRX rims. Inside, it was equipped with sports seats, an M steering wheel, and a specific instrument cluster as standard. Today, the M635 CSi is considered one of the last classic M models with uncompromising motorsport DNA.

Facts

Exterior & interior:

• Exterior color: Blue Metallic
• Interior: beige leather interior
• Repainted: The car has been completely repainted in the past

Engine and transmission:

• 3.4-liter inline six-cylinder engine (M88) with 286 hp (210 kW)
• Manual transmission
• Engine overhaul in 2013 by specialist Wolfgang Tegethoff
• Last oil change in 2023

Mileage:

• Mileage: 128,387 km (read)
• Mileage verifiable: partially
• No service history available

Documentation:

• German vehicle documents
• Invoices

Tires, bodywork, and underbody:

• Tires: from 2014
• Bodywork: generally in good condition, but with some defects (see below)
• Underbody: good condition – dry ice blasted, derusted, welded, and sealed in 2017
• Please view the photo gallery and videos for further insights into the condition of the vehicle

Known defects:

• Small dent with paint chipping on the front right fender
• Hole and scratch with rust in the rear right wheel arch
• Two small paint blisters on the sunroof
• Water stains on the headliner
• Interior trim with patina
• Air conditioning compressor removed
• Rear right window regulator not working
• Please view the photo gallery and videos for further insight into the condition of the vehicle

Summary:

A rare 1985 BMW M635 CSi (E24) in metallic blue with beige leather interior is for sale. The vehicle has been owned by the seller since 2012 and has been driven regularly. With extensive investments in technology and appearance, including a documented engine overhaul, new interior trim, and a preserved underbody, the car presents itself as a technically well-maintained classic with a sporty touch. Visually, the BMW shows age-related signs of wear and tear and isolated rust spots, which would require investment. A good basis for lovers of Bavarian driving culture and collectors of classic M models.