Police are investigating after two alleged arson attacks on Lynch Hill Lane, which took place around 3.35am on June 26 and around 2.55am on June 28.
Thames Valley Police is appealing for witnesses and information and would like to identify a small, light-coloured car seen in the area around the time of the attacks.
No one was injured in either incident.
A spokesperson said: “If anyone has information or footage that they can share with us in relation to this incident, please get in touch with us online or via 101 quoting reference 43260326142.
“You can also contact Crimestoppers on 0800 555 111 to report anonymously.”