Ajay's hairstyle changes in some scenes.
Sanjana & Rahul are in France, driving to supposedly their dream house. Rahul is shown at the wheel and the car is a right-hand drive. Across Europe (except for UK), everywhere cars are left-hand drive vehicles.
Kajol being staying in foreign country doesn't have any trace of accent.
Ajay drives a Jeep whose tire is shot at and manages to put it on a railway track and jump.