LuxCoreRender Forums

You could also set clamping a bit higher. Anyway, here's a take on it (@wetransfer).

With PT engine (uniDir) you should enable "Light Tracing" under Light Path otherwise, switch engine to BiDir.

e.g. PS.
If you still find your scene non-functional, make it as IRL, physically correct;
I made new scene and used Area light and also Interior + Exterior volumes.

That's shading issue. Either add supporting edges to mesh/geo or apply "Auto Smooth".

Since metal surface is specular/reflective, that means its look mostly depends on lighting conditions along surface properties (roughness, anisotropy, colors, imperfections and other contamination factors). It's a play between light and shadow.

e.g.

yup, 3 secs denoised viewport render tends to look 'plasticky'
and black interior in your case is most likely caused by single-sided (glass (light ray refracts only once) which "Architectural" glass avoids altogether (it's just reflective)

check "Architectural" on Glass and under "Advanced" (Material Output) set "Shadow Color"

Clearly, uncanny valley. Glass lensing too strong, dull lighting, shadows too weak, lack of ground and other surface imperfections, nor is there any minute details such as slight car shaking, dust, smoke... since it's an outdoor scene. It's quite a task to make car looking aesthetically pleasing and...

Maybe this old one works... Lamborghini Gallardo LuxRender

Nice vibes

Nice, will you continue on that idea?
I'd love to see how it performs on few of your scenes (especially on 'smokey' / volumetric ones)
Since that's also the slowest and mostly 'lossy-w-denoise' part of LuxCore.