Rare Car Archive

Makes › Alfa Romeo Italy › 6C › 6C 2300 B Mille Miglia · Rare specification · 1938–1939 Extremely Rare

Alfa Romeo
6C 2300 B Mille Miglia

Sporting short-chassis MM version of the 6C 2300 B (Touring berlinetta)

Alfa Romeo 6C 2300 B Mille Miglia (Wikimedia Commons search)
Alfa Romeo 6C 2300 B Mille Miglia (Wikimedia Commons search)
Photo: Zairon · CC BY-SA 4.0
106BuiltFactory reported
0Chassis documentedin this archive
?SurvivingNot yet verified
Contents
  1. 01Overview
  2. 02Production & history
  3. 03Specifications
  4. 04Colours & options
  5. 05Individual cars
  6. 06Reference

01Overview

At a glance

Built
106 Built
Years
1938–1939
Engine
Front, longitudinal, inline six-cylinder; light-alloy monobloc with detachable head · 2,309 cc / 2.3 LFactory: 2,309 cc
Power
69.9 kW / 95 PSFactory: 95 PS
Top speed
170 km/hFactory: 170 km/h
Body
Not yet verified
Designer
Vittorio Jano (mechanical design); bodies by Carrozzeria Touring, Milan
In this archive
Not yet verified
Surviving
Not yet verified

Sources and any conflicting figures are in the sections below.

Why it matters

The 6C 2300 B Mille Miglia was the top-specification 6C of the late 1930s, built only on the short 3000 mm Corto chassis with the 95 horsepower engine. It took its name from the model's results in the Mille Miglia, where a 6C 2300 finished fourth overall in 1937 and a Touring-bodied example won its class in 1938. Most of the roughly 107 cars carried Berlinetta or Spider bodies by Touring of Milan.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Model rarityNot yet assessed
Specification rarityExtremely Rare 106 · Built1,2
Colour rarityNot yet assessed
Individual rarityNot yet assessed
Historical rarityNot yet assessed
Survival rarityNot yet assessed

Each kind of rarity is rated separately and never combined.

Photos

Exterior, interior and detail photos with their licences.

02Production & history

Production

Every figure says what it counts.

What is countedFigureBasisStatus
Factory package productioncars produced 1938-1939 as printed under "Vetture Prodotte" on the museum page for the 6C 2300 B Mille Miglia 1061,2 Factory production Factory reported

Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.

History

Jano's 6C 2300 replaced the 6C 1500 line with a 70 x 100 mm engine. The sportier 95 horsepower Pescara variant followed in late 1934, named after Alfa Romeo's 1-2-3 in the 24-hour race at Pescara, and the 2300 B series of 1935 brought a lighter chassis with hydraulic brakes and independent suspension on all four wheels.

After Boratto and Guidotti finished fourth overall in the 1937 Mille Miglia, Alfa Romeo renamed its top 6C the 6C 2300 B Mille Miglia instead of Pescara. In 1938, the last Mille Miglia before the war, a Touring Spider took a further class win. The Museo Storico gives production as 106 cars in 1938-1939; RM Sotheby's and Gooding give 107.

Variants

How each version differs from the standard 6C 2300 B Mille Miglia.

No variants documented yet. Have a source? Contribute it.

03Specifications

Technical specifications

Engine

Engine familyNot yet verified
Engine codeNot yet verified
LayoutFront, longitudinal, inline six-cylinder; light-alloy monobloc with detachable head1
Cylinders61
Displacement 2,309 cc / 2.3 LFactory: 2,309 cc1
Bore 70 mmFactory: 70 mm1
Stroke 100 mmFactory: 100 mm1
Compression ratioNot yet verified
Valvetrain2 valves per cylinder, 2 overhead camshafts driven by chain and gears1
Fuel systemTwo twin-barrel carburettors1
Power 69.9 kW / 95 PSFactory: 95 PS1Rating: manufacturerMuseum writes CV. Gooding (S4) also gives 95 BHP at 4,500 rpm; Gooding (S2) gives 105 HP at 4,800 rpm with triple carburettors and five-speed gearbox for a late car, chassis 815.092.
Power at 4,500 rpm1
TorqueNot yet verified

Transmission & drivetrain

GearboxNot yet verified
Gears41Gooding (S2) lists five speeds for chassis 815.092.
Driven wheelsRear1

Chassis, body & dimensions

ChassisWelded box-section side members and cross-members1
Front suspensionIndependent, transverse arms, coil springs, hydraulic dampers1
Rear suspensionIndependent, longitudinal arm, longitudinal torsion bars, hydraulic dampers1
BrakesHydraulic drums on all four wheels1
SteeringNot yet verified
Body constructionBerlinetta (Touring Superleggera)1
Wheelbase 3,000 mmFactory: 3,000 mm1
Length 4,640 mmFactory: 4,640 mm1
Width 1,680 mmFactory: 1,680 mm1
Height 1,550 mmFactory: 1,550 mm1
Front trackNot yet verified
Rear trackNot yet verified
Kerb weight 1,380 kgFactory: 1,380 kg1Page says only "Peso".
Dry weightNot yet verified

Performance

Maximum speed 170 km/hFactory: 170 km/h1
0–100 km/hNot yet verified
Fuel tankNot yet verified

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

04Colours & options

Factory colours & interiors

Original paint and trim, with the number of cars in each where a source gives it.

Not yet documented. Have a source? Contribute it.

Factory options & codes

Codes are shown exactly as written by the manufacturer.

Not yet documented. Have a source? Contribute it.

05Individual cars

Chassis register

Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.

Not yet documented. Have a source? Contribute it.

Competition history

Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

Auction & sale history

Documented public sales of the individual cars. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

See one in person

Museums where an example of this car can be seen.

No example is documented on public display yet. Have a source? Contribute it.

06Reference

Identification guide

How to tell an original from a replica or later conversion.

A genuine car is on the 3000 mm Corto chassis, not the 3250 mm Lungo, with the 2309 cc 95 horsepower engine and a Touring Superleggera body. The chassis numbers quoted in the cached lots (815053, 815087, 815092) all sit in the 815xxx range. Check for later changes: the Touring Berlinetta offered by RM Sotheby's received a Giulietta-derived five-speed gearbox (its original, numbered 843047, was kept), and the Gooding 2005 spider carries re-created Touring-style coachwork on a genuine Mille Miglia chassis and drivetrain, so a Touring-style body alone does not prove originality.

Sources

Each number links to the exact facts it supports.

  1. 1
    Museo Storico Alfa Romeo, collection: 6C 2300 B Mille Miglia Level A Museo Storico Alfa Romeo (Arese)
    • 106 (1938-1939)
    • 6 cilindri in linea, monoblocco e testa smontabile in lega leggera (Dettagli vettura)
    • 6 cilindri in linea (Dettagli vettura)
    • 2309 cc (70x100 mm) (Dettagli vettura)
    • 2 alberi a camme in testa con comando a catena e ingranaggi (Dettagli vettura)
    • 2 carburatori doppio corpo (Dettagli vettura)
    • 95 CV a 4500 giri/min. (Dettagli vettura)
    • 4 marce + RM (Dettagli vettura)
    • Trazione posteriore (Dettagli vettura)
    • Longheroni e traverse a scatola saldati (Dettagli vettura)
    • Anteriore: ruote indipendenti, bracci trasversali, molle elicoidali (Dettagli vettura)
    • Posteriore: ruote indipendenti, braccio longitudinale, barre di torsione (Dettagli vettura)
    • Idraulici, a tamburo sulle 4 ruote (Dettagli vettura)
    • Carrozzeria Berlinetta (Touring Superleggera) (Dettagli vettura)
    • Passo: 3000 mm, lunghezza: 4640 mm (Dettagli vettura)
    • lunghezza: 4640 mm (Dettagli vettura)
    • larghezza: 1680 mm (Dettagli vettura)
    • altezza 1550 mm (Dettagli vettura)
    • Peso 1380 kg (Dettagli vettura)
    • Massima velocità 170 km/h (Dettagli vettura)
    Accessed 2026-11-12
  2. 2

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