Testing and cost

3 changes, oldest first.

2008 introduced

In-season testing limits

Testing was restricted, ahead of the full in-season testing ban in 2009. Source

2009 banned

In-season testing banned

Track testing during the season was banned, with limited exceptions in later years. Source

2020 introduced

Cost cap agreed for 2021

During the pandemic the teams agreed a budget cap of 145 million dollars from 2021, falling to 140 million in 2022 and 135 million in 2023; Mercedes' dual-axis steering (DAS) was banned for 2021. Source