I've debated this question a lot.
Currently I drive a 2010 Nissan Sentra. I keep it up very well so even though it's 5+ years old it still glints compared to other cars in the parking lot. However, I've worked with largely millenials on the lower end of the price spectrum ($100K-$200K). They drive cars similar to mine... older Accords, Mazdas, etc. I don't feel the need to upgrade quite yet and when I do it'll likely be a Prius.
Real estate is one of those professions where it's all about image. Since you're presumably driving clients around, one of their first contacts with you will be in your car. Given your clientele are on the higher end, an older Lexus or luxury car may be worth it. Not something brand new and/or financed, but used, older, yet still a little higher end.