microcarfan
  • City car
  • Italy
  • Four wheels
  • Built under licence abroad

Fiat 500 Topolino

Also known as Fiat 500, Fiat 500 A, B and C, “Topolino”

A real four-cylinder car, scaled down until two people fitted. The engine sat ahead of the front axle and the radiator behind it, so the nose sloped away between two headlamps perched on the wings, and Italy saw a mouse. It was called Topolino, the little mouse, from the first day, and Fiat built about half a million.

Small two-door saloon with a tall narrow grille, headlamps on the black wings and a sloping cream bonnet.
A cream and black 1936 Fiat 500 A at the Museo Nazionale dell’Automobile, Turin, in May 2026.Photo: Marie-Lan Taÿ Pamart, CC BY 4.0, via Wikimedia Commons

At a glance

The spec plate

Fiat 500 Topolino

500 A, B and C · Turin

Built
1936–⁠1955On sale from 15 June 1936; the last Belvedere estates at the end of 1955
Country
ItalyLingotto, then Mirafiori, Turin
Maker
FiatAt the Lingotto, Turin; at Mirafiori from 1947
Engine
569 cc water-cooled side-valve fourAhead of the front axle; overhead valves from 1948
Power
13 CV9.6 kW at 4,000 rpm; 16.5 CV (12.1 kW) from 1948
Length
3,215 mm1,275 mm wide, 1,377 mm high
Weight
535 kgThe 500 A
Seats
2With room behind for luggage or two children; the estate seated four
Wheels
4Engine ahead of the front axle, driving the rear wheels
Price new
8,900 lireJune 1936; the trasformabile 9,750 lire
Production
about 520,000Fiat, all versions, 1936–⁠55; about 122,000 of them 500 As
Top speed
85km/h85 km/hThe 500 B and C saloons 95 km/h

How big is it?

True proportion

3.21 m

It is 245 mm longer than a Fiat 500, about 1.8 adults laid end to end.

  • 1.27 m wide
  • 535 kg: about seven adults
  • Two seats, and room behind for two children
  • A 2,000 mm wheelbase
Drawn at true proportion. The track is 3.6 metres long; the adult stands at the same scale. The Peel P50 is the smallest production car, on every page for comparison.

The story

History

The story Italians tell begins in 1930, when Mussolini summoned Senator Giovanni Agnelli and asked him for a car that would put Italy on wheels, at no more than 5,000 lire. Italian Wikipedia tells it that way, French Wikipedia calls it a legend, and German Wikipedia dates Agnelli’s order to his engineers to 1933.source 1source 2source 3 Italy had reason to want one: in 1936 it had about 222,000 motor vehicles of every kind for 42 million people.source 1

Fiat tried two ways at once. One camp would use what the firm already knew. The other was led by Oreste Lardone, a pupil of Giulio Cesare Cappa, who drew a four-seater with a 500 cc air-cooled twin and front-wheel drive. In the summer of 1931 it left the Lingotto works on its first outing, with the tester, the designer and Agnelli aboard, and on the climb to Cavoretto the engine caught fire. Agnelli banned front-wheel drive from Fiat, and Lardone was dismissed.source 1source 4 Fiat Heritage’s own account, as Italpress reported it in 2026, credits the front-drive idea to the technical director, Antonio Fessia, instead.source 5 When Mussolini visited Fiat in October 1932, he reminded Agnelli of his promise.source 1

Giacosa’s economies

Fessia and Tranquillo Zerbi gave the job, coded Zero A, to Fessia’s young assistant on the Balilla, Dante Giacosa, an aero-engine engineer; Italpress dates the handover to 1934.source 1source 4source 5 It was the first complete car of one of the designers on this site, and he took cost out of it wherever he could.source 3source 5 The engine, a side-valve four of 569 cc, went ahead of the front axle. The radiator sat behind and above it, so that the water could circulate by itself, by thermosiphon, with no pump. The fuel ran by gravity from a tank under the scuttle, with no fuel pump either; the engine was splash-lubricated, and the chassis was two pressed-steel beams.source 3source 1 Rodolfo Schaeffer, head of the body department, shaped the body.source 4 On 7 October 1934 Giacosa and Fessia took turns driving the final prototype over a rough loop from Turin through Ivrea, La Serra and Cigliano, and it touched 82 km/h (51 mph) on the autostrada.source 1source 4

Launched as the Fiat 500

The name Topolino, after Disney’s Mickey Mouse, was considered; after the League of Nations’ sanctions of 1935 the press guessed at “Fiat Ginevra”.source 1 On 10 June 1936, at the Villa Torlonia, it was shown to Mussolini and the press simply as the Fiat 500, and it went on sale on 15 June at 8,900 lire, about twenty times a skilled worker’s monthly pay; the trasformabile, with a full-length roll-back roof, cost 9,750.source 1source 5 The 5,000-lire target had been missed by a long way.source 1source 5 Fiat filmed the launch with the Istituto Luce on the terrace of the Circolo della Stampa in Turin.source 5

nuova piccola grande vettura del risparmio e del lavoro

Fiat’s description of the 500 at its launch in June 1936, as reported by Italpress in 2026. In English: “The new little big car of saving and work.”source 5

The sloping bonnet and the headlamps on the wings made the face, and the nickname stuck.source 5source 1 The Lane Motor Museum calls it the smallest mass-produced car of its time.source 6 Before the war Fiat sold about 20,000 a year.source 5 At 3,215 mm (10 ft 7 in) it runs past the length this site takes as a microcar’s limit, and it is here because it set the idea of the small car that its successor, the Fiat Nuova 500, made smaller still.source 1

Living with a mouse

Two sat in front, with room behind for luggage or two children.source 7 Its rear-hinged doors had sliding windows, and the boot could be reached only from inside, by folding the seat back. First and second gears needed double-declutching, a flap on the air intake stopped the carburettor icing in winter, and a starting handle waited for a flat battery.source 3 The early cars had no fuel gauge: the owner dipped a wooden stick into the tank.source 8 The engine gave 13 CV (9.6 kW), the car would do 85 km/h (53 mph), and it used about 6 litres per 100 km (47 mpg).source 7source 1source 2 Its weak point was the centre big-end, which went short of oil when hot.source 3 The low nose gave a good view ahead, but with so much weight in front it was poor on loose or steep ground.source 7source 1

A van, the Furgoncino, for 300 kg, came late in 1936, largely for the army.source 1 Overloaded vans, and owners who crammed four or five people into a two-seater, cracked the rear of the frame. So from chassis 046000, in the second half of 1938, the frame was lengthened at the back to take full semi-elliptic springs in place of the quarter-elliptics: the first series is known as the balestra corta, the second as the balestra lunga.source 7source 1

The army used it as a liaison car from 1936 and at the front from 1940; after 8 September 1943 requisitioned cars served the Wehrmacht.source 1 The side-valve 500 A was built almost unchanged until early 1948, and from 1947 at Mirafiori instead of the Lingotto.source 1source 5

Black and white: a small dark saloon on a cobbled road, a man leaning out of the open door.
Plate III · 1939 A 500 A on a country road in Hungary in 1939, its rear-hinged door open.Photo: Fortepan, Public domain, via Wikimedia Commons

The B, the C and the estate

The 500 B of the 1948 Geneva show kept the body but had an overhead-valve head, 16.5 CV (12.1 kW), almost 30 per cent more power, telescopic dampers on all four wheels and an anti-roll bar at the back, and it would do 95 km/h (59 mph).source 1source 5 With it came the Giardiniera, a four-seat estate with a rear door, a folding rear seat and sides of ash framing and Masonite panels in the American woody manner. It scaled down Mario Revelli’s “functional body” of 1946 for Carrozzeria Viotti; Viotti owned the name Giardinetta, so Fiat’s was the Giardiniera, the word for the carts Italian greengrocers took to market.source 7source 1 Italian Wikipedia calls it the first estate car built in large numbers anywhere, a claim no other source read supports.source 1 The B lasted little more than a year, and about 21,000 were built.source 3source 1

The 500 C of 1949 was Fiat’s hundredth model. Its headlamps were set into the wings behind a horizontal grille, the spare wheel no longer hung at the back, the head was aluminium, and it was the first Fiat built in series with a heater as standard; the roll-back roof became standard too.source 1source 5 In 1951 by Italian Wikipedia, 1952 by English, the wood-sided Giardiniera, hand-built in Fiat’s special-bodies shop, gave way to the steel Belvedere, named for the pleasant view through its opening roof, and its sales rose.source 1source 7 The saloon ended in 1954 and the Belvedere at the end of 1955. Fiat replaced them with the 600 in 1955 and the Nuova 500 in 1957, after which the old car was called Topolino to tell the two apart.source 7source 3source 1

Built abroad

The Topolino was built under licence in several countries. In France it was the Simca 5. In Germany it was built at Heilbronn by NSU-Fiat, a Fiat-controlled company with nothing to do with NSU of Neckarsulm: about 4,000 by 1939, at RM 1,925, and 9,064 of the 500 C in 1951–⁠55. The Weinsberg coachworks built roadsters on it, some cut down without doors.source 3source 9 It was assembled by Steyr-Puch in Austria, by Polski Fiat in Warsaw and by Premier in India, and a few by Todd Motors in New Zealand before 1937; a four-seat convertible was built for export to England.source 3source 1 In 1948 Fiat and Nash agreed on a spider with a Fiat chassis and a Nash body by Bill Flajole; the NXI prototype was shown in 1949, and the deal faded.source 1

Racing, and hot rods

Topolinos, tuned more or less, ran in hundreds of Italian races. Elio Zagato began racing just after the war in a Furgoncino stripped into a barchetta.source 1 Siata sold an overhead-valve conversion giving 20 PS at 6,000 rpm, and the specials ran from the Siata Amica and the Giannini 750 Sport “Mille Miglia” to Giotto Bizzarrini’s “Macchinetta” of 1953; in Germany some had Viktor Derbuel’s superchargers.source 3source 1 (More in racing and rallying.) Across the Atlantic it had a second life: in the 1960s and 1970s Topolino bodies went onto American hot rods and dragsters, the “Fiat Altereds”.source 7source 3

Red small car seen from above the rear, its fabric roof rolled back over the tail and a spare wheel on the back.
A 1937 500 A trasformabile with its full-length roof rolled back to the tail.Photo: Andrew Bone, CC BY 2.0, via Wikimedia Commons
Black and white: a man in a leather jacket stepping from a small saloon numbered 29, officials and a chequered flag around him.
Plate I · 1937 Raffaello Guzman climbs out of his Fiat 500, No. 29, at the 1937 Mille Miglia.Photo: Foto Locchi, Public domain, via Wikimedia Commons
Black and white: a small estate lettered radio italiana on its door, a man leaning in, trees behind.
Plate II · 1952 Italian radio’s 500 C estate, lettered “radio italiana”, at the Helsinki Olympic Games in July 1952.Photo: Volker von Bonin / Helsinki City Museum, CC BY 4.0, via Wikimedia Commons

Simca 5

1936–⁠1949 · a record on this page

France saw the Topolino before Italy did. Henri Théodore Pigozzi’s new firm, Simca, at first Simca-Fiat, showed the Simca 5 at Nanterre on 10 March 1936, three months before the Italian launch, from drawings and pre-series cars that Fiat had sent.source 4source 2 The strikes of the Front Populaire held real production back until the autumn. In April 1936 it cost 9,900 francs as a Standard, 10,900 as a Luxe and 12,500 as a Grand Luxe, and the découvrable, with the roll-back roof, 12,950.source 2 A van for 250 kg followed at the Paris salon of October 1937 and lasted until February 1949, and the Simca 6 took the car’s place.source 2

René Bellu’s count, given by French Wikipedia, is 46,472, year by year: 7,282 in 1936, 12,131 in 1939, 604 in 1940 and 3,328 in 1941, then 3,411 in 1946, 3,733 in 1947, 3,901 in 1948 and 221 vans in 1949. For 1937 the same article gives both 12,925 and 14,194.source 2 The car was 570 cc by Simca’s reckoning, with 6.5:1 compression, and weighed 560 kg (1,235 lb) in running order.source 2

Simca proved it with economy runs. In the 1936 Concours du Bidon de Cinq Litres, five Simca 5s took the first five places in their class, and under the Automobile Club de France’s eye one ran Paris–Madrid and back (see the records). Prepared by Amédée Gordini as a 23 hp barchetta of 450 kg, it ran at Le Mans in 1937, 1938 and 1939 and won the class for cars of up to 750 cc, by the Le Mans museum’s account as French Wikipedia gives it.source 2

Light blue open racing two-seater with strapped bonnet, wire wheels and a big 48 on its side.
The blue Simca 5 Gordini, No. 48, of the 1937 Le Mans 24 Hours, at the Le Mans museum in 2024.Photo: Olinone, CC0 1.0, via Wikimedia Commons

Pictures

More photographs, old and new

Variants

Three series and many bodies

The Topolino family
VariantYearsWhat differsHow many
500 A, first seriesJune 1936–⁠1938Quarter-elliptic rear springs; saloon, trasformabile and vanTo chassis 046000
500 A, second series1938–early 1948Frame lengthened at the back for semi-elliptic springsAbout 122,000 500 As in all
500 A FurgoncinoLate 1936–⁠48A van for 300 kg, mostly for the armyWithin the 500 A total
500 B1948–⁠49Overhead valves, 16.5 CV, hydraulic dampers, an anti-roll bar; the Giardiniera estateAbout 21,000
500 C1949–⁠54Headlamps in the wings, an aluminium head, a heater as standardAbout 370,000–376,000, Belvedere and van included
500 C Belvedere1951/52–55The estate with steel sides in place of woodWithin the 500 C total
NSU-Fiat 5001937–⁠39; 500 C 1951–⁠55Built at Heilbronn, Germany; Weinsberg roadsters tooAbout 4,000, then 9,064
Simca 51936–⁠49Built at Nanterre, France46,472

Specification

The 500 A of 1936 unless noted

Engine and drive

Engine and drive
EngineFour cylinders in line, water-cooled, side valves, ahead of the front axle; Solex 22 HD carburettorsource 3source 1
Capacity569 cc (52 × 67 mm)source 3source 1
Power13 CV (9.6 kW) at 4,000 rpmsource 1source 214 PS by German Wikipedia; 16.5 CV for the 500 B and C
CoolingThermosiphon, with no water pump; the radiator behind and above the enginesource 3source 1
FuelBy gravity from a tank under the scuttle, with no fuel pumpsource 3source 1
GearboxFour speeds and reverse; synchromesh on third and top onlysource 3source 1
B and C enginesOverhead valves by pushrods; the B with a cast-iron head, the C aluminiumsource 1

Body and chassis

Body and chassis
FrameTwo pressed-steel beams, drilled for lightnesssource 3source 1
Front suspensionIndependent, a transverse leaf spring and lower wishbonessource 3source 1
Rear suspensionLive axle; quarter-elliptic springs to 1938, then semi-ellipticsource 7source 3source 1
BrakesHydraulic drums on all four wheels; the handbrake a band on the gearboxsource 2source 3
SteeringWorm and wheelsource 3source 1
Electrics12 V, 75 W dynamo; 130 W on the B and Csource 1

Dimensions

Dimensions
Length3,215 mmsource 7source 1
Width1,275 mmsource 7source 1
Height1,377 mmsource 1
Wheelbase2,000 mmsource 1source 6
Track1,114 mm front, 1,083 mm rearsource 1
Weight535 kgsource 3source 1560 kg for the Simca 5 in running order

Performance and running

Performance and running
Top speed85 km/h (53 mph)source 7source 5source 290 km/h by German Wikipedia, 80 km/h by the Lane museum; the B and C 95 km/h
ConsumptionAbout 6 litres per 100 kmsource 7
Fuel tank21 litressource 1
Turning circle8.70 msource 1
Price new8,900 lire (June 1936); trasformabile 9,750 liresource 1source 5

How many were built?

Every figure, with its source

About 520,000 built by FiatNearly 520,000 of every version were built in Italy from 1936 to 1955; Italian Wikipedia gives 519,847. The much-quoted 122,000 is not a rival figure: it is the 500 A alone, and the A, B and C together come to about 519,000.

  1. nearly 520,000Fiat 500 A, B and C, Italy, 1936–⁠55Two sources agree

    English Wikipedia; “over half a million” at the Shuttleworth Collectionsource 7source 10

  2. 519,847the same, exactlyOne source

    Italian Wikipedia’s infoboxsource 1

  3. 516,646all Fiat-built carsOne source

    German Wikipediasource 3

  4. over 376,000given for the whole run, but matching the 500 C aloneOne source

    Italpress, reporting Fiat Heritage, 2026source 5

  5. about 370,000500 CsOne source

    German Wikipediasource 3

  6. about 122,000500 As, 1936–⁠48Two sources agree

    Lane Motor Museum; German Wikipediasource 6source 3

  7. over 110,000side-valve 500 AsOne source

    Italian Wikipediasource 1

  8. 46,472Simca 5s, FranceOne source

    René Bellu, Toutes les Simca, via French Wikipediasource 2

  9. about 21,000500 Bs, Giardiniera includedTwo sources agree

    German and Italian Wikipediasource 3source 1

  10. 9,064NSU-Fiat 500 Cs, Germany, 1951–⁠55One source

    Werner Oswald, via German Wikipediasource 9

  11. about 4,000NSU-Fiat 500s, Germany, to 1939One source

    German Wikipediasource 3

  • Two sources agreetwo good sources give the figure
  • One sourcea good source, alone
  • Unconfirmeda lead only, not yet checked

Famous for

Three points

  1. No water pump, no fuel pump

    Thermosiphon cooling and gravity feed, with the radiator perched behind an engine set ahead of the axle.source 3source 1

  2. The little mouse

    A sloping nose between two wing-mounted headlamps gave the car its name.source 1source 5

  3. Giacosa’s first car

    The start of the line that led to the Fiat 600 and the Nuova 500.source 3source 5

Racing and records

The French car’s feats, 1936–⁠39

Simca, building the car in France, set out to prove its economy and endurance, and Gordini took it to Le Mans.source 2

3.1 l/100 km
the best of five Simca 5s in the 1936 Bidon de Cinq Litres, over 160 km at an imposed 45 km/h (28 mph).source 2
3.624 l/100 km
Paris–Madrid and back, 2,500 km (1,550 miles), under Automobile Club de France control.source 2
105.532 km
covered in one hour at Montlhéry; a 50,000 km run at 1,000 km a day averaged 4.87 l/100 km.source 2
Le Mans
Gordini’s Simca 5 ran in 1937, 1938 and 1939, and won the class for cars of up to 750 cc.source 2

On screen

Confirmed appearances only

One is said to appear in Il segno di Venere (1955); Italian Wikipedia mentions it only in passing.

Survivors and collecting

Today

No count of survivors has been found, but the clubs are many: the Topolino Autoclub Italia, the Club Topolino Fiat Torino, the club “La Topolino Amaranto”, the Topolino-Club Deutschland and Topolino Car Belgium, which takes the Simcas too.source 5source 1source 3source 2 Paolo Conte’s song of 1975, La Topolino amaranto, is set in the summer of 1946.source 7source 1

For the 80th anniversary, in June 2016, more than 200 Topolinos climbed the spiral ramp of the Lingotto to its rooftop test track and paraded on to the castle at Pralormo, led by Dante Giacosa’s own car from the Fiat Heritage collection.source 11 For the 90th, on 11–14 June 2026, the Topolino Autoclub Italia and the Club Topolino Fiat Torino ran “La Topolino va ai 90”, with a gala at Fiat’s Heritage Hub at Mirafiori.source 5

Turin’s Museo Nazionale dell’Automobile keeps a 500 A chassis that Fiat gave it in 1937, which shows ideas Giacosa borrowed from aircraft engineering.source 5 The Shuttleworth Collection at Old Warden has the right-hand-drive car Dorothy Shuttleworth bought new in 1937; the Lane Motor Museum in Nashville and the National Automobile Museum of Tasmania each have a car of 1936.source 10source 6source 12 Since 2023 the name has lived on in Fiat’s electric Fiat Topolino quadricycle.source 3

At auction
CarSalePrice
1939 500 A coupé découvrable, no reserveArtcurial, Rétromobile, Paris, 2014source 8€14,304, against an estimate of €22,000–28,000
Black and white: a tiled workshop with small Fiats, one on a lift, and mechanics at work.
Plate IV · 1955 A 500 C among the cars in a Fiat dealer’s workshop in De Pijp, Amsterdam, in May 1955.Photo: Ben van Meerendonk / AHF, collectie IISG, CC BY-SA 2.0, via Wikimedia Commons

Sources

Numbered as in the text

No period road test was read, and no Fiat production table: the history rests on the Italian, German and English Wikipedia articles, with museum pages and Fiat’s anniversary reports. Sources are given as plain text; the links are on the Credits page.

  1. Italian Wikipedia, Fiat 500 “Topolino”, read in full with its infobox. Used as a lead; its bibliography includes Dante Giacosa’s memoir (1979) and Alessandro Sannia (2008).
  2. French Wikipedia, Simca 5, read in full. Used as a lead; it cites René Bellu, Toutes les Simca, and the Le Mans museum.
  3. German Wikipedia, Fiat 500 Topolino, read in full. Used as a lead.
  4. German Wikipedia, Simca 5, read in full. Used as a lead.
  5. Italpress, “Torino celebra i primi 90 anni della Fiat 500 ‘Topolino’”, June 2026, a report of Fiat’s Heritage Hub event, read in full.
  6. Lane Motor Museum, “Fiat 500 Coupé ‘Topolino’, 1936”, collection page, read in full.
  7. English Wikipedia, Fiat 500 “Topolino”, read in full. Used as a lead.
  8. Artcurial, Rétromobile sale, Paris, 2014, lot 315, 1939 Fiat 500 A Topolino coupé découvrable, read in full.
  9. German Wikipedia, NSU-Fiat, read in full. Used as a lead; it cites Werner Oswald, Deutsche Autos.
  10. The Shuttleworth Collection, “Fiat 500 ‘Topolino’”, collection page, read in full.
  11. Ken Zino, “Eightieth Anniversary of the Fiat 500 ‘Topolino’”, AutoInformed, June 2016, read in full.
  12. National Automobile Museum of Tasmania, “1936 Fiat Topolino”, read in full.