Rare Car Archive

Makes › Maserati Italy › 150S (1955) · Factory competition · 1955–1957

Maserati
150S (1955)

Small-capacity Maserati sports racer; the sources used list individual chassis such as 1657, but none states a build total.

Still being researched: identification guide. Everything shown is checked against the cited sources. Know more? Send us a source.

Maserati 150S (1955) (Wikimedia Commons search)
Maserati 150S (1955) (Wikimedia Commons search)
Photo: Mr.choppers · CC BY-SA 4.0
?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
1955–1957
Engine
Front, vertical in-line four cylinders · 1,484.1 cc / 1.5 LFactory: 1,484.1 cc
Power
104 kW / 142 PSFactory: 140 hp · converted
Top speed
230 km/hFactory: 230 km/h
Body
Not yet verified
Designer
Bellentani, Alfieri (design); bodies by Fiandri in 1955, then Fantuzzi
In this archive
Not yet verified
Surviving
Not yet verified

Sources and any conflicting figures are in the sections below.

Why it matters

The 150S was Maserati's entry in the 1.5-litre sports car class of the mid-1950s, built to compete with Porsche, EMW and OSCA. It was a small two-seat racing sports car in aluminium with a four-cylinder twin-cam engine, and it was raced in that class in Europe. A Grand Touring production car was built alongside the racers.

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.

Photos

Exterior, interior and detail photos with their licences.

02Production & history

Production

Every figure says what it counts.

No production figures recorded yet.

History

The 150S programme started in 1953 under Bellentani, with the engine as the first element developed. The 1500 cc car was conceived as a racing sports car for the international market.

Production began in 1955 with bodies by Fiandri, and from about the fourth car a revision lengthened the wheelbase by 100 mm. Later cars were bodied by Fantuzzi, and the chassis work was given to Gilco. The development of the 150S was definitively abandoned at the end of 1956.

A road-going GT version was built in 1957 using the 150S engine in a modified 200S frame; it is covered on the 150 GT page.

Variants

How each version differs from the standard 150S (1955).

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

03Specifications

Technical specifications

Engine

Engine family1500 cc four-cylinder with two overhead camshafts1 Independently researched
Engine codeNot yet verified
LayoutFront, vertical in-line four cylinders2 Independently researched
Displacement 1,484.1 cc / 1.5 LFactory: 1,484.1 cc1 Independently researched
Bore 81 mmFactory: 81 mm1 Independently researched
Stroke 72 mmFactory: 72 mm1 Independently researched
Compression ratio9.0:11 Independently researched
ValvetrainDOHC, two valves per cylinder1 Independently researched
Fuel systemTwo Weber 45 DCO3 carburettors2 Independently researched
Power 104 kW / 142 PSFactory: 140 hp · converted1 Independently researchedUnit kept as the source writes it ('bhp'), not converted.
Power at 7,500 rpm1 Independently researched
TorqueNot yet verified

Transmission & drivetrain

GearboxManual, four or five speed plus reverse, dry multi-disc clutch2 Independently researched
Gears42 Independently researched
Driven wheelsRear2 Independently researched

Chassis, body & dimensions

ChassisTubular frame2 Independently researched
Front suspensionNot yet verified
Rear suspensionNot yet verified
BrakesNot yet verified
SteeringNot yet verified
Body constructionNot yet verified
WheelbaseNot yet verified
LengthNot yet verified
WidthNot yet verified
HeightNot yet verified
Front trackNot yet verified
Rear trackNot yet verified
Kerb weightNot yet verified
Dry weight 630 kgFactory: 630 kg2 Independently researchedS2 gives 'Nett weight 600 kg'; the spec table in S1 gives 630 kg dry. The dry figure is used here.

Performance

Maximum speed 230 km/hFactory: 230 km/h2 Independently researchedS1 gives 230 kph; S2 gives 'Estimated top speed 144 mph' which is consistent.
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.

Not yet documented. Have a source? Contribute it.

Sources

Each number links to the exact facts it supports.

  1. 1
    Tipo 150S (Alfieri museum data, archived) Level C maserati-alfieri.co.uk (archived)
    • DOHC with two valves per cylinder
    • 4-cyl in line 1484.1 cc engine
    • Bore 81mm and stroke 72mm
    • Compression ratio 9.0:1
    • Power output 140bhp @ 7500 rpm
    Accessed 2026-11-13
  2. 2
    Maserati 150S specification (archived gallery page) Level C maserati.org.au (archived)
    • Engine Type: Front, vertical in-line four cylinders
    • Free induction with 2 Weber 45DCO3 carburettors
    • Gearbox: 4 (or 5) speeds plus reverse
    • Drive: Rear wheel drive
    • Frame: Tubular
    • Dry Weight: 630 kg
    • Top Speed: 230 kph
    Accessed 2026-11-13

Keep exploring

More from Maserati

See all 101 cars by Maserati →

Italy More from Italy

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