Car Seat for Nissan Qashqai 1.2

Hi moms & dads... Looking for a car seat that its not bulky.. currently been to baby kingdom to try a few of them.. but found out that its too squeezy if i were to placed in the centre for 2 passengers to sit in between the car seats.. my reason is that both my parents are staying with me.. and all of us are travelling together in the car.. so if i were to placed at the isofix area.. also too squeezy for my wife and mom to sit.. as the car seat takes up 1 seat...