Rare Car Archive

Makes › Alfa Romeo Italy › RM · Rare production

Alfa Romeo
RM

Alfa Romeo RM, shown at the 1923 Paris Motor Show; lead gives about 500 cars.

Still being researched: why it matters, history. Everything shown is checked against the cited sources. Know more? Send us a source.

IDENTIFICATION CARD · ALFA ROMEO RM
No licensed photograph yet. Photographs are published only when their licence permits it.
?ProductionNot yet verified
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
Not yet verified
Years
Not yet verified
Engine
Front-mounted, longitudinal inline four · 1,996 cc / 2.0 LFactory: 1,996 cc
Power
32.8 kW / 44.6 PSFactory: 44.6 PS
Top speed
100 km/hFactory: 100 km/h
Body
Not yet verified
Designer
Not yet verified
In this archive
Not yet verified
Surviving
Not yet verified

Sources and any conflicting figures are in the sections below.

Why it matters

Not yet documented. Have a source? Contribute it.

How rare is it?

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

Model rarityNot yet assessed Production figure not yet verified.
Specification rarityNot yet assessed
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.

02Production & history

Production

Every figure says what it counts.

No production figures recorded yet.

History

Not yet documented. Have a source? Contribute it.

Variants

How each version differs from the standard RM.

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

03Specifications

Technical specifications

Engine

Engine familyNot yet verified
Engine codeNot yet verified
LayoutFront-mounted, longitudinal inline four1 Independently researchedCarfolio also gives 'Engine alignment | Longitudinal'. From an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Cylinders42 Independently researched
Displacement 1,996 cc / 2.0 LFactory: 1,996 cc1 Independently researchedThe dealer page (S2) describes the normal RM engine as 2-litre, which agrees. From an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Bore 76 mmFactory: 76 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Stroke 110 mmFactory: 110 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Compression ratio6.00:11 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
ValvetrainEight valves, two per cylinder1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Fuel systemSingle Memini carburettor1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Power 32.8 kW / 44.6 PSFactory: 44.6 PS1 Independently researchedCarfolio's bhp and kW figures are its own conversions of the PS value. From an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Power at 3,200 rpm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
TorqueNot yet verified

Transmission & drivetrain

GearboxNot yet verified
Gears41 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Driven wheelsRear-wheel drive1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.

Chassis, body & dimensions

ChassisNot yet verified
Front suspensionNot yet verified
Rear suspensionNot yet verified
BrakesDrum front and rear1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
SteeringNot yet verified
Body constructionNot yet verified
Wheelbase 2,900 mmFactory: 2,900 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Length 4,250 mmFactory: 4,250 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Width 1,680 mmFactory: 1,680 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Height 1,650 mmFactory: 1,650 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Front track 1,330 mmFactory: 1,330 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Rear track 1,330 mmFactory: 1,330 mm1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Kerb weight 1,450 kgFactory: 1,450 kg1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Dry weightNot yet verified

Performance

Maximum speed 100 km/hFactory: 100 km/h1 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
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.

RM chassis numbers run from 12001 to 12265, with the earliest numbers reserved for prototypes.

Sources

Each number links to the exact facts it supports.

  1. 1
    1924 Alfa Romeo RM Sport specifications Level D Carfolio.com
    • Type | S-4
    • 1996 cc
    • 76.00mm × 110.00mm
    • Compression ratio | 6.00:1
    • 8 valves total
    • 1 Memini carb
    • 44.6 PS (44.0 bhp) (32.8 kW)
    • 44.6 PS (44.0 bhp) (32.8 kW) @3200 rpm
    • Transmission | 4M
    • Drive | RWD
    • Brakes F/R | Dr/Dr
    • Wheelbase | 2900 mm
    • Length | 4250 mm
    • Width | 1680 mm
    • Height | 1650 mm
    • front | 1330 mm
    • rear | 1330 mm
    • Kerb weight | 1450 kg
    • Top speed | 100 km/h (62 mph)
    Accessed 2026-11-13
  2. 2
    1924 Alfa Romeo RM Four Wheel Drive Half Track Torpedo, chassis 12023 Level C Kidston
    • normal 2-litre, 4-cylinder RM engine
    Accessed 2026-11-13

Keep exploring

More from Alfa Romeo

See all 212 cars by Alfa Romeo →

Italy More from Italy

62 other makes from ItalyAbarthACM AutomobiliAres DesignATSAuto Avio CostruzioniAutobianchiAznomB EngineeringBandiniBertoneBizzarriniBrixia-ZüstCagivaCarrozzeria Touring SuperleggeraCeiranoChiribiriCisitaliaCizetaColoniCoviniDallaraDe TomasoDiattoF.I.A.L. LegnanoFerrariFervesFiatFissoreFlorentiaGhiaInnocentiIntermeccanicaIsoIsotta FraschiniItalaItaldesignLaffiteLamborghiniLanciaMaseratiAll makes →