Car Collector International
Classic · 1937–1939

Alfa Romeo 8C 2900

The 8C 2900B Lungo / Corto — one of the most beautiful and most valuable pre-war cars ever built.

Car Collector International Editorial
Black Alfa Romeo 8C 2900B Spider with cream interior and full skirted rear wings, front three-quarter studio view, showing the tall chrome grille, chrome wire wheels and flowing 1930s coachwork.
Overview

Why this car matters

The 8C 2900A (1937) and 8C 2900B (1937–1939) used a development of Alfa Romeo's Grand Prix Tipo B straight-eight reduced for road use — 2,905cc, twin superchargers, around 180–220 bhp depending on tune. Independent suspension front and rear, lightweight construction and Touring Superleggera Berlinetta coachwork made the 2900B Corto (short-chassis) and Lungo (long-chassis) two of the most desirable cars on Earth. Only 32 production 2900Bs were built.

Considered by many the most beautiful pre-war car ever built; concours examples have crossed $20 million.

Variants

Range and production

VariantYearsProductionNotes
2900A193710Grand Prix-derived; very rare.
2900B Corto1937–1939Not separately recordedShort-chassis sports specification.
2900B Lungo1937–1939Not separately recordedLong-chassis with Touring Superleggera Berlinetta coachwork.
Collector Variants

Limited & special editions

The models below represent the most significant limited and special edition variants — factory-produced cars that command meaningful premiums over standard examples and warrant specific attention from serious collectors.

8C 2900B 'Lungo' Touring Spider · 1937–1939

12
Distinguishing features
Long-wheelbase 8C 2900B with Touring Superleggera Spider coachwork. 180 hp twin-supercharged 2.9-litre straight-eight.
Value premium
Multi-tens-of-millions; consistently among the highest-value pre-war cars.
Inspection points
RIAR (Registro Italiano Alfa Romeo) and ASI documentation; original Touring Superleggera body number.

8C 2900B Mille Miglia Spider Speciale (Botticella) · 1938

4 (works Mille Miglia entries)
Distinguishing features
Touring 'Botticella' (Little Barrel) body, lightweight competition specification, 220 hp. Le Mans / Mille Miglia works entries.
Value premium
Multi-tens-of-millions; standalone market.
Inspection points
Alfa Romeo Historical Archive (Arese) documentation essential.
Buyer's Guide

What to look for

Provenance and originality

For pre-war and vintage cars such as the Alfa Romeo 8C 2900, provenance is paramount. Chassis and engine number matching, period coachbuilder records, factory build sheets where available, continuous ownership documentation, original handbooks and any competition or concours history are the foundation of value. Verified original chassis, Touring Berlinetta coachwork, Alfa Romeo Centro Storico documentation.

Mechanical inspection priorities

Twin-supercharged Grand Prix-derived straight-eight; rebuilding is a seven-figure undertaking. A pre-purchase inspection by a recognised marque specialist should include compression and leak-down testing, magneto and ignition checks, chassis straightness and frame survey, axle and steering wear assessment, brake system review (mechanical or hydraulic per period), and an extended road test on varied terrain to expose carburation, cooling and gearbox issues that only emerge under sustained running.

Body, chassis and originality of coachwork

Pre-war coachwork is rarely truly original after a century of use. Establish whether the body is original to the chassis (period photographs, build records, coachbuilder plates), whether it has been re-bodied at any point, and the standard of any restoration. Quality of timber framing, ash health, panel beating and paint depth are all critical. Concealed structural rot, re-bodies presented as original, and 'tribute' cars built on later or unrelated chassis must be priced accordingly.

Specification and event eligibility

2900B Corto Touring Berlinettas lead; Lungo cars follow; 2900A (10 built) is essentially uncatalogued. For vintage cars, event eligibility — Mille Miglia, Goodwood Revival, Pebble Beach, VSCC events, Le Mans Classic — can underwrite a substantial proportion of market value. Verify FIA/FIVA papers, period race history where claimed, and the car's standing with the relevant marque registry before purchase.

Ownership

Living with it

Typical mileage
300–2,000 miles typical for vintage use; rally cars higher
Service interval
Annual full service; pre-event check before any rally or tour
Annual running cost
$8,000 – $35,000 depending on use, storage and event programme
Fuel economy
10–18 mpg typical; heavy carburetted engines run rich
Insurance
Use a specialist agreed-value vintage policy with declared value reviewed annually. Premiums reflect declared value, storage, event use and driver experience with pre-war machinery.

Maintenance planning

Vintage cars require disciplined preventive maintenance: lubrication regimes, magneto service, carburettor synchronisation, brake adjustment, and timber and trim conservation. A car used regularly and serviced annually by a specialist will outlast a stored example neglected for decades.

Specialist access and parts

Tiny specialist circle; almost all work is supervised by recognised pre-war Alfa specialists. Confirm the availability of marque specialists, period-correct fasteners, coachwork trim, instruments and tyres before committing. A car requiring fabricated one-off parts will absorb time and cost that a similar example with active specialist support will not.
Common Problems

Known issues by system

Engine

Twin-supercharger straight-eight bearing and rotor wear

Critical$80,000 – $200,000
Symptoms — Loss of boost, knock under load, weak top end.
Inspection — Hot oil pressure under boost; both blowers tested separately; specialist required.
Identity

8C 2900A (race) vs. 2900B (road) chassis distinction

CriticalValue impact: 8C 2900B regularly $20m+
Symptoms — Only 33 8C 2900B chassis built; 2900A is essentially a P3 derivative.
Inspection — Verify with RIAR; chassis number is decisive.
Coachwork

Touring Superleggera Spider / Berlinetta authentication

CriticalValue impact: 30–60%
Symptoms — Most desirable bodies are Touring Spiders; berlinettas trade differently.
Inspection — RIAR, Touring archive and period photograph cross-reference.
Chassis

Independent suspension wear (trailing arm front, swing axle rear)

Major$10,000 – $25,000
Symptoms — Handling vagueness, uneven tyre wear.
Inspection — Specialist suspension geometry check.
Auctions

Recent results

DateAuctionCarMileageResult
2025-11-01
RM Sotheby's
London, Lot 137
1937 8C 2900B Spider
£2,817,500
Sold
2024-08-16
Gooding Christie's
Pebble Beach Auctions, Lot 29
1938 8C 2900B Lungo Spider
US$14,030,000
Sold
Investment

Long-term outlook

Blue ChipHorizon: 10+ years

Among the most valuable and beautiful pre-war cars. Liquidity is essentially nil.

Our view, not advice. This section is Car Collector International's editorial judgement on where this model sits in the collector market, based on the production, specification and market data set out in this guide. It is not a recommendation to buy or sell and it is not investment advice. Values can fall as well as rise.

Recommended

The trusted network

Specialists

  • Alfa Romeo marque specialist
    View →
    UK / Europe
    Alfa Romeo 8C 2900 restoration, mechanical service and originality reviews.
  • Pre-war coachwork specialist
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    International
    Timber framing, ash conservation, panel beating and period-correct paint for pre-war coachwork.
  • Concours preparation studio
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    International
    Concours preparation, detailing and event support for pre-war and vintage cars.
  • Hagerty
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    USA / UK / EU
    Agreed-value collector insurance specialising in pre-war and vintage cars.
  • Lockton Performance
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    UK / EU
    Specialist agreed-value cover for significant pre-war and competition cars.

Storage

  • Windrush Car Storage
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    London & Cotswolds, UK
    Climate-controlled storage and collection management for pre-war and classic cars.
  • AutoVault
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    Essex, UK
    Dehumidified storage at 55% RH in purpose-built sealed buildings, with maintenance programmes and individual motor-trade insurance cover.
  • Classic Car Club Manhattan
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    New York, NY
    Secure urban storage for collector and pre-war cars.

Transport

  • CARS UK
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    UK & Europe
    Enclosed concours and event transport for pre-war and vintage machinery.
  • Reliable Carriers
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    USA (national)
    Enclosed coast-to-coast transport for pre-war American and European cars.
  • FERRLOG
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    Italy / Europe
    Air-ride enclosed transport for Italian and European collector cars.

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The valuation figures in this guide are for research purposes only and do not constitute financial or investment advice. See our full disclaimer.