The Audi A1 offers impressive fuel efficiency across its range of petrol and diesel engines. The entry-level 1.0-litre 25 TFSI petrol engine delivers up to 51.4 mpg, with the seven-speed S tronic automatic version achieving up to 48.7 mpg[1]. The 30 TFSI variant, equipped with a 109 bhp engine and a sixth gear, reaches up to 53.3 mpg[1].
The 1.4 TFSI engine is also notable for balanced efficiency and performance. Official laboratory data for the Audi A1 1.4 TFSI (185 hp) S tronic from model years 2010-2014 reports 47.9 mpg (UK), though real-world driving typically produces 33.6 mpg (UK) combined, 23.0 mpg (UK) in urban conditions, and 44.1 mpg (UK) on the highway[2]. User-reported results suggest an average of 39–40 mpg for short journeys in the 1.4-litre Sport petrol model[3].
For city driving, the highly efficient 1.0L TFSI petrol engine averages around 44 mpg (5.4L/100km)[4], making the A1 a strong choice for urban commuters who value low running costs.
Diesel options, such as the 1.6 TDI (90 hp) S tronic, offer 51.4 mpg (UK) in combined mode, with lower urban and countryside figures depending on driving patterns[2].
Across all configurations, expect best fuel efficiency in highway driving, with figures reaching over 44 mpg (UK) for certain petrol and diesel engines[1][2]. Real-world results may be lower than official stats due to driving style, routes, traffic, and vehicle condition.