Its very hard to penetrate into the Pakistani new car market with the ruling troika of Suzuki, Honda, Toyota (SHT - you may add an ' i ' before 'T')
The key lies in availability of cheap spares AND proper advertisement of this fact.
Dump the market with spares, and then launch an enormous ad campaign emphasizing on ''mechanics and parts available everywhere in every town''.
Do that, wait 3 months, sit back, and enjoy the profits.