Amazing to see this is achieved without touching a texture at all! However, I think a higher resolution might be good, e.g. the "POLICE" writings and other parts suffer quite a bit from the low res.
The white is of course too bright, as is always the case when someone puts something white in Arma. You would need to use a (not too light) grey tone. The Tyres also could look a bit dustier, not so factory-fresh. Apart from that, well done!