It happened on V8 Marlborough Street at around 4.50pm yesterday (21/1).
A white Mercedes was travelling northbound along the dual carriageway, towards H5 Portway in the left hand lane. It pulled out into the right hand lane and collided with two vehicles causing a black Audi to roll onto the southbound carriageway.
No one was injured as a result of the collision.
Investigating officer, PC Christopher Ruvolo-Jones of the Joint Roads Policing Unit based in Milton Keynes, said: “We would like to speak with anyone who has information which could assist with us as we investigate the circumstances of this incident.
“If you have dash-cam and were in or around the area at the time, please take a look and share anything significant with police.
“You can make a report online or call the non-emergency number 101, please use the reference 43220030696.”