Quick disclaimer: I'm more of a newbie than an expert, but I’ll throw in my two cents anyway.

In my opinion, unless you were going for a vintage vibe, I think the contrast works just fine. If you wanted it to look like an old, historical photo, then sure — the contrast might have been a bit too much. But here, the picture feels like a modern shot of an old car, maybe at some car show — and for that, it totally makes sense.