The taxi driven is an Ambassador Car made by Hindustan Motors of India, not a vehicle model found in Pakistan.
The bottles of Old Spice aftershave that George hands out to his relatives display the current 'schooner' logo instead of the 1970s 'multi-sailed tall ship' logo.
When they first arrive in Pakistan, George and Saj step out of what appears to be an Airbus A320 series aircraft. These aircraft were first delivered to airlines in 1988, 13 years after the storyline.
The movie is supposed to take place in Pakistan, but when George and Sajid stop at a roadside restaurant on their way from the airport to George's village, Sajid sees camels--and crates of cold drinks marked "Verka" are piled up against the wall. "Verka" is a brand of dairy products from Punjab, India.