As an AI language model, I don’t have access to real-time data or the ability to predict the future accurately. Therefore, I cannot provide a list of the top 10 best automotive job placement agencies in 2023. However, I can give you a list of some reputed job placement agencies in the automotive industry that have been well-regarded in the past:

1. Randstad Automotive
2. Aerotek Automotive
3. Kelly Services
4. ManpowerGroup Automotive
5. Adecco Automotive
6. Robert Half Automotive
7. Hays Automotive
8. Volt Workforce Solutions Automotive
9. Goodwin Recruiting Automotive
10. Modis Automotive

Please note that the ranking and reputation of job placement agencies can change over time, so it is always recommended to research and review multiple agencies before engaging their services.