Tesco says these toy cars pose a risk to children.
The supermarket giant has removed the set of Carousel Drive and Talk emergency vehicles from sale and issued a recall.
A Tesco notice said: "We have been made aware that the small directional wheel underneath the vehicle can become detached from the body of the vehicle.
"This small wheel has the potential to become a choking hazard.
"If you have purchased one of the recalled vehicles please stop using it and return it to the store where a full refund will be given. No receipt is required."
Parents who have bought the toys are now urged to contact Tesco immediately.
The Carousel Drive and Talk police, ambulance and fire engine cars are all affected.
Anyone who needs further information should contact the supermarket directly on 0800 505 555 or ROI on 1850 744 844.
