Rare Car Archive

Makes › ACMA France › Vespa 400 GT (1961) · Rare specification · 1956–1961

ACMA
Vespa 400 GT (1961)

Grand Tourisme version of the ACMA-built Vespa 400 microcar, with four-speed gearbox, automatic mixer and white-wall tyres.

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

IDENTIFICATION CARD · ACMA VESPA 400 GT (1961) 1956–1961
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
1956–1961
Engine
Rear-mounted two-cylinder two-stroke, air-cooled · 394 cc / 0.4 LFactory: 394 cc
Power
10.4 kW / 14.2 PSFactory: 14 hp · converted
Top speed
90 km/hFactory: 90 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

The Vespa 400 was a small two-stroke car developed by Piaggio, the Vespa maker, and built in France by ACMA at Fourchambault. It was shown at the 1957 Paris Salon, when Vespa were concerned about the Fiat 500 as a rival. Production ended in 1961.

How rare is it?

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

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

At the Paris show in October 1960 ACMA presented a Luxe 61 and a Grand Tourisme with a four-speed gearbox, automatic oil mixer and white-wall tyres. In 1961 ACMA built 1,849 Vespa 400s, fewer than 200 of them GTs.

Variants

How each version differs from the standard Vespa 400 GT (1961).

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

03Specifications

Technical specifications

Engine

Engine familyNot yet verified
Engine codeNot yet verified
LayoutRear-mounted two-cylinder two-stroke, air-cooled1,2 Independently researched
Cylinders21 Independently researched
Displacement 394 cc / 0.4 LFactory: 394 cc1 Independently researchedEnthusiast site gives 393 cc.
BoreNot yet verified
StrokeNot yet verified
Compression ratioNot yet verified
Fuel systemNot yet verified
Power 10.4 kW / 14.2 PSFactory: 14 hp · converted1 Independently researchedEnthusiast site (level D) gives 12 CV réels (PS-type rating) for the same car; the museum figure is kept as stated.
Power atNot yet verified
TorqueNot yet verified

Transmission & drivetrain

GearboxNot yet verified
Gears31 Independently researched
Driven wheelsNot yet verified

Chassis, body & dimensions

ChassisMonocoque1 Independently researched
Front suspensionCoil springs1 Independently researched
Rear suspensionCoil springs1 Independently researched
BrakesHydraulic1 Independently researched
SteeringKingpin1 Independently researched
Body constructionNot yet verified
WheelbaseNot yet verified
Length 2,835 mmFactory: 2,835 mm1 Independently researched
Width 1,270 mmFactory: 1,270 mm1 Independently researched
Height 1.25 mFactory: 1.25 m2 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.
Front trackNot yet verified
Rear trackNot yet verified
Kerb weight 360 kgFactory: 360 kg1 Independently researchedMuseum lists only 'Weight' 360 kg. Enthusiast site gives about 380 kg empty (à vide).
Dry weightNot yet verified

Performance

Maximum speed 90 km/hFactory: 90 km/h1 Independently researchedEnthusiast site gives about 100 km/h (level D).
0–100 km/hNot yet verified
Fuel tank 23 LFactory: 23 L2 Independently researchedFrom an enthusiast source (level D) – not yet confirmed by the maker or a registry.

“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
    1957 Vespa 400 Level C Microcar Museum
    • Motor: Vespa, 2-stroke
    • No. Cylinders: 2
    • Displacement: 394 cc
    • Horsepower: 14
    • Gearbox: 3 + rev
    • Body : Monocaque
    • Suspension Front: Coil
    • Suspension Rear:Coil
    • Brakes: Hydraulic
    • Steering: Kingpin
    • Length: 2 835 mm
    • Width: 1 270 mm
    • Weight: 360 kg
    • Top Speed: 90 kph
    Accessed 2026-11-13
  2. 2
    Ma Vespa 400 Level D Private enthusiast site (Ma-Vespa-400.com)
    • moteur arrière de 393 cc, 2 temps, 2 cylindres, refroidissement par air
    • 2,85 m de long pour 1,27 de large et 1,25m de haut
    • Réservoir de 23 litres
    Accessed 2026-11-13

Keep exploring

More from ACMA

This is the only ACMA documented so far.

See all 1 car by ACMA →

France More from France

70 other makes from FranceAixamAlcatelAlpineAmilcarArzensAvions VoisinBACBallotBerlietBolloreBuccialiBugattiCGCharron, Girardot et VoigtChenard-WalckerCitroënClément-PanhardDAMSDarracqDBDB (Deutsch-Bonnet)De DietrichDe Dion-BoutonDe Dion, Bouton et TrépardouxDe La ChapelleDelageDelahayeDelaunay-BellevilleDerbyDSExagonFacel VegaFarmanFord FranceGentyGordiniHommellHopiumHotchkissJimenezAll makes →