| Audi S1 (8X) | |
| Manufacturer: | Audi |
| Production: | 2014–2018 |
| Assembly: | Belgium: Brussels (Audi Brussels) |
| Class: | Hot Hatch (B) |
| Layout: | Front-engine, four-wheel-drive |
| Platform: | Volkswagen Group PQ25 |
| Engine: | 2.0 litre TFSI (petrol) |
| Transmission: | 6-speed manual |
| Wheelbase: | 2469mm |
| Length: | 3975mm |
| Width: | 1740mm |
| Height: | 1417mm |
| Weight: | 1316kg (2,901lb) |
| Related: | Audi A1 |
| Sp: | uk |
The Audi S1 was Audi's smallest S model car and a performance version of the Audi A1. The first variant (Typ 8X, produced from 2014 to 2018) has 228 hp (231 PS / 170 kW) derived from the Volkswagen group's EA888 2.0 litre turbo four cylinder, and on demand Haldex Quattro four-wheel-drive.
The 3-door S1 accelerates from 0-62 mph (0-100 km/h) in 5.8 seconds whereas the 5-door 'Sportback' variant takes 0.1 second longer at 5.9 seconds. Both models have an electronically limited top speed of 155 mph (250 km/h).