First, it doesn't matter how many cars you sell, because every brand is different. For example, in Beijing Hyundai's 4s store, you sell 10 cars a month, while in Mercedes-Benz 4s store, you sell 5 cars a month, which is almost the sales champion. So, what matters is your turnover rate. For example, you can tell human resources or sales manager that you receive 30 groups of customers a month and the sales volume is 65400.
Second, the 4s store takes a fancy to your sales ranking, profit ranking, boutique ranking, equipment ranking and insurance performance ranking in the previous 4s store ..... as long as one or two of these rankings are outstanding.
Third, think about the reason why you left your job. Don't just talk about salary.
Fourth, I wish you success in your application!