# ALFA 20/30 HP

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Motor vehicle

Alfa Romeo 20/30 HP Alfa Romeo 20/30 HP ES Overview Manufacturer Alfa Romeo Production 1914 – 1922 Assembly Portello, Milan, Italy Designer Giuseppe Merosi Body and chassis Body style Berlina Torpedo Layout FR layout Powertrain Engine 4.1 L I4 sidevalve 4084 cc 4.2 L I4 sidevalve 4250 cc

**ALFA** or later **Alfa Romeo** has made three cars named as **20/30 HP**, first one 1910 4-cylinder 4-6-seater tourer, improved version **20/30 HP E** in 1914 and 1921 the **20/30 HP ES Sport**, a 4-seater sportscar.[1]

## The Alfa 20/30 HP

[Giulio Ramponi](/source/Giulio_Ramponi) in an A.L.F.A 24 series E in 1920

**The Alfa Romeo "Torpedo" 20/30[HP](/source/Tax_horsepower)** was the first car under the ALFA brand to formally carry the [Alfa Romeo](/source/Alfa_Romeo) name. It was equipped with a 4250 cc sidevalve inline-four engine producing 67bhp. The car was intended for a launch amongst the upper classes of Italy, so the price was notably high- around three times that of the [Ford Model T](/source/Ford_Model_T), a large sum of money when one considers the post-[World War I](/source/World_War_I) economy.

The ALFA 20/30 HP was almost identical to the [24 HP](/source/ALFA_24_HP) of 1910 and was often simply called the HP 24 Serie E. The 24 HP's engine was reused completely, save for a sidechain on the camshaft to reduce noise. The maximum power was increased to 49bhp at 2400rpm, and the top speed increased to 115 km/h (71 mph). The vehicle was available in two body variants: A Berlina chassis and a [torpedo](/source/Torpedo_(car)) variant.

At the outbreak of World War I on August 3, 1914, Italy declared itself neutral. ALFA plants, as such, had not been directly affected by war, or by manufacturing related to the war effort. Production numbers between 1914 and 1915 totaled 285 finished 20/30 HP models. In 1915, the production totals decreased to 95 frames for the 20/30 HP, which were only completed in 1920.

## Alfa Romeo 20/30 ES Sport

Antonio Ascari in his Alfa Romeo 20-30 ES at the 1922 Targa Florio

The ES Sport was based on the 1914 20/30 E model, the "S" being added to emphasize the sportiness of the car. Notably, the ES had [electric lights](/source/Electric_light) and an electric [starter](/source/Starter_motor#Electric_starter). The [chassis](/source/Chassis) was shortened from previous models as well.

Price was a major negative factor, and only 124 were ever produced. Notably, it is with the ES that [Enzo Ferrari](/source/Enzo_Ferrari) began his racing career with teammates [Antonio Ascari](/source/Antonio_Ascari) and [Ugo Sivocci](/source/Ugo_Sivocci).

- Engine: 4 cylinders inline

- Displacement: 4250 cc

- Power: 67 bhp at 2600 rpm

- Top speed: 130 km/h (81 mph)

## Notes

1. **[^](#cite_ref-barchetta.cc_1-0)** ["All production, prototype & project Alfa Romeos from 1910 - 1971"](http://www.barchetta.cc/All.Ferraris/events-stories/stories/alfa-romeo/alfa-romeo-index/index.html). *barchetta.cc*. [Archived](https://web.archive.org/web/20101222195004/http://www.barchetta.cc/All.Ferraris/events-stories/stories/alfa-romeo/alfa-romeo-index/index.html) from the original on 22 December 2010. Retrieved 2010-11-15.

## References

Borgeson, Griffith (1990). *The Alfa Romeo Tradition*. City: Haynes (Foulis) Publishing Group Ltd. Somerset, UK. [ISBN](/source/ISBN_(identifier)) [0-85429-875-4](https://en.wikipedia.org/wiki/Special:BookSources/0-85429-875-4).

v t e Alfa Romeo A marque of Stellantis Brands Marques Active Alfa Romeo Defunct FNM Divisions, joint-ventures and subsidiaries Former & defunct Fábrica Nacional de Motores (FNM) Alfa Romeo Avio Società Pompe Iniezione Cassani & Affini (SPICA) Società Franco Italiana Motori (Sofim) Alfa Romeo Nissan Autoveicoli S.p.A. Predecessors & old names Società Italiana Automobili Darracq (S.I.A.D.) (predecessor) Anonima Lombarda Fabbrica Automobili (A.L.F.A.) (old name) Current cars 33 Stradale Giulia Junior Stelvio Tonale Future cars Castello Historic and discontinued models 24 HP 40-60HP 20-30HP G1/G2 RM RL 4C 4C Spider 6C 8C 1900 Matta Giulietta 2000 Giulietta Sprint Speciale Giulia 2600 105/115 Series Coupés GTA Gran Sport Quattroruote Spider (105/115) 1750 Berlina 33 Stradale MiTo Montreal 2000 Berlina Alfasud Alfetta Alfetta GT Sprint Nuova Giulietta Giulietta Alfa 6 Arna 33 75 90 164 SZ RZ 155 GTV Spider (916) 145 146 156 166 147 GT 159 Brera Spider (939) 8C Competizione 8C Spider Concept cars 1000 Abarth 2000 Sportiva 2uettottanta 33.2 4C Concept BAT series Bella Brera Caimano Canguro Carabo Dardo Delfino Disco Volante Disco Volante (2013) Diva Eagle Giulia Sport Gloria Iguana Issima Kamal Monospider Navajo New York Taxi Nuvola Pandion Proteo Sportut Scarabeo Scarabeo II Scighera Tipo 103 Visconti TZ3 Vivace Vola Zeta 6 Tonale Concept Buses 40A 80A 85A 110A 140A 150A 430A 500A 800A 900A 902A 950A Mille Trolleybuses 110AF 140AF 800AF 900AF Mille AF Trucks 50 80 85 110 350 430 450 500 800 900 950 Mille A15 A19 A38 F20 Racing cars Grand Prix P1 P2 P3 Tipo A Tipo B (P3) Tipo C (8C-35) Tipo 308 Tipo 312 Tipo 316 Bimotore 12C Tipo 512 158/159 Alfetta TZ/TZ2 GTA Tipo 33 177 179 182 183T 184T 185T SE 048SP 155 V6 TI Alfa Special Vans Romeo A11/F11 A12/F12 AR6 AR8 Motorsport Companys Alfa Romeo in motorsport Alfa Romeo in Formula One (Results) Scuderia Ferrari Alfa Corse Autodelta N.Technology Jolly Club Alfa GTV Cup Technologies Blue&Me Selespeed Multiair Alfa Romeo engines (aircraft engines) platforms Places and facilities Alfa Romeo Museum Alfa Romeo Arese Plant Alfa Romeo Cassino Plant Alfa Romeo Pomigliano d'Arco plant Alfa Romeo Portello Plant Balocco People Nicola Romeo Giuseppe Merosi Vittorio Jano Enzo Ferrari Rudolf Hruska Carlo Chiti Gioacchino Colombo Wifredo Ricart Orazio Satta Puliga Giuseppe Busso Ugo Gobbato Sergio Limone Drivers Formula One drivers Tazio Nuvolari Giuseppe Campari Achille Varzi Luigi Arcangeli Clemente Biondetti Antonio Ascari Ugo Sivocci Jean-Pierre Wimille Guy Moll Gastone Brilli-Peri Baconin Borzacchini Other Alfa Romeo I Alfa Romeo II Alfa Romeo III Alfa Romeo Racing Italiano History of Alfa Romeo Category Commons

v t e Alfa Romeo car timeline, 1910s–1940s — next » Ownership Ugo Stella & investors Nicola Romeo IRI Type 1910s 1920s 1930s 1940s 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 4-cyl. 12 HP/15 HP 15-20 HP WWI [α] WWII 24 HP RM 20-30 HP [α] 20-30 ES 40-60 HP 6-cyl. G1 RL 6C 1500/1750/1900 6C 2300 6C 2500 8-cyl. 8C 2300 8C 2900 Grand Prix car GP P1 P2 Tipo A Tipo B (P3) 8C 35 158 158 308 Bi motore 12C 312 512 316 162 Notes [α] 105 A.L.F.A 15-20 HP and 20-30 HP started in 1915 were completed in 1920, after the war, as Alfa Romeo models.

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Adapted from the Wikipedia article [ALFA 20/30 HP](https://en.wikipedia.org/wiki/ALFA_20%2F30_HP) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/ALFA_20%2F30_HP?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.