Alfa Romeo · 1921–1923
Alfa Romeo G1
The Alfa Romeo G1 (1921–23) was an Italian automobile. It was the first all-new design from Alfa Romeo after the end of the A.L.F.A. brand. The car was designed by A.L.F.A. pioneer Giuseppe Merosi as the factory's new luxury vehicle while he simultaneously revised the prewar 24HP racing car into the 20/30ES model. At this time, he was engaged in a legal dispute with Nicola Romeo regarding the brand takeover conditions. The chassis was lengthened and stiffened from the 1914 A.L.F.A. 40-60 HP model, entering into market territory competition with Rolls-Royce. A new 6.3 L (384 cu in) straight-6 engine was introduced, producing 70 PS (51 kW) and 216 lb⋅ft (293 N⋅m) of torque. The G1 achieved a maximum speed of 86 miles per hour (138 km/h), winning its production class at the Coppa del Garda race. Total production was 52 cars. It found no customers in Italy, and all 50 production model (excepting two prototypes) found their way to Australia. Chassis numbers 6001 and 6002 were built in 1920 as prototypes, whereas 6003 to 6052 were built mostly in 1921. Only one known survivor exists as of 2019, chassis number 6018. It was in 2007 owned by New Zealand's Alfa importer and is also the oldest surviving Alfa Romeo-branded car.
Text from Wikipedia (CC BY-SA 4.0).
Predecessor: A.L.F.A 40/60 HP · Successor: Alfa Romeo RL
All Alfa Romeo G1 data: UK builds, safety, recalls, model years →
Specifications
- name
- Alfa Romeo G1
- Manufacturer
- Alfa Romeo
- Production
- 1921–1923
- Assembly
- Portello, Milan, Italy
- Predecessor
- A.L.F.A 40/60 HP
- Successor
- Alfa Romeo RL
- Class
- Luxury car
- Body style
- Limousine
- Layout
- FR layout
- Engine
- 6,330 cc sidevalve I6
- Transmission
- 4-speed manual with reverse gear
- Wheelbase
- 3400 mm
- Length
- 4494 mm
- Kerb weight
- 1500 kg (3306 lbs)
- Designer
- Giuseppe Merosi
Specification summary from Wikipedia (CC BY-SA 4.0). Measured facts from Wikidata (CC0). Check the linked sources for citations.
More photos
Sources
- Wikidata — https://www.wikidata.org/wiki/Q1310718CC0 1.0 · retrieved 2026-10-01
- Wikipedia — https://en.wikipedia.org/wiki/Alfa_Romeo_G1CC BY-SA 4.0 · Text © Wikipedia contributors; revision 1255514206 · retrieved 2026-10-01
- Wikimedia Commons — https://commons.wikimedia.org/wiki/File:1921_Alfa_Romeo_G1_Zagato_limousine.jpgPublic domain · Photo: Unknown photographer · retrieved 2026-10-01
- Car Model Index — https://models.autoculturesociety.com/Compiled record. Sources that do not permit reuse are not copied; this index is credited instead.