Are you going to Groningen by car? Park on a P+R terrain on the outskirts of the city of Groningen and travel further with the P + R Bus (Q-link).
Parking is free and for a trip to the city center and back you only pay € 6 for a maximum of 5 people. P+R Hoogkerk has space for 1000 cars.
The P + R bus ticket can be purchased at the ticket machine on the P + R site (paying by pin) or at the bus driver (paying in cash). With the P + R ticket you can transfer to all buses within the city of Groningen. This is possible within one hour after you have boarded for the outward or return journey.