A vehicle start-stop system or stop-start system automatically shuts down and restarts the internal combustion engine to reduce the amount of time the engine spends idling, thereby reducing fuel consumption and emissions. This is most advantageous for vehicles which spend significant amounts of time waiting at traffic lights or frequently come to a stop in traffic jams. Start-stop technology may become more common with more stringent government fuel economy and emissions regulations. This feature is present in hybrid electric vehicles, but has also appeared in vehicles which lack a hybrid electric powertrain. For non-electric vehicles fuel economy gains from this technology are typically in the range of 3–10%, potentially as high as 12%. In the United States, idling wastes approximately 14.8 billion liters of gasoline per year.

The Alfa Romeo MiTo is a front-wheel drive, three-door supermini designed by Centro Stile Alfa Romeo and presented in 2008 at Castello Sforzesco in Milan with an international introduction at the British Motor Show in 2008. The MiTo was marketed across a single generation from 2008 to 2018, sharing the Fiat Small platform with the Fiat Grande Punto. Production reached 293,428 at FCA's Mirafiori plant.