This is my latest work - a Mitsubishi Space Star (also marketed as Mitsubishi Mirage) modelled in Version 3.6.9.
It took me approximately 180 hours which spread over the course of 6 weeks (Blender, modelling only) as well as an additional 8 hours for tracing the side, front, back and top view (using Affinity Designer) which I used as reference images to create the general shape.
All details were built with eye measure from photos.
Most of the car is symmetrical, which means that only one half had to be built. I used the mirror modifier for almost everything as well as the subdivision modifier, shrinkwrap modifier (for the decals and the back lights) and array modifier (for the grille and for the heating lines in the back window, also for the wheel caps to an extent).
As mentioned above it took some hours to complete the work. One reason might be that the work process is much slower than anticipated, due to lack of knowing all the tricks and features.
My question to you is: Do you also spend so much time creating your work with Blender?
The result (for the upload I removed the number plates):
You have this strange vertical line on your door where the paint seems to get a different shade or reflection index. And on your render of the top of the car I can see a similar thing on the roof.
Yes, I noticed that when the pictures were done rendering. I don't know where it's coming from. At first I thought that there was a problem with the mesh (i.e. not connected vertices) but the structure is fine. I haven't investigated further, but it probably has to do someting with the material itself. For the sparkling effect I applied a voronoi noise which is scaled up.