is that actually 2 metres ? 2mx10cmx10cm
or 20cm x 30cm
if the biggest size is 30cmx30cm - then size won't be an issue.
Lots of printers around that can handle that size - cheep to expensive
Your biggest issue is most likely going to be designing the actual files to print from.
3d printers work from stereolithography files (.stl)
These need to be designed and produced in Cad programs.
It is unlikely that the car manufacturers will give you their files - not in their best interests as they'd rather sell you the part.
There is the possibility to scan the original parts. But to do this with any reliability you need to invest in a decent scanner. Currently the best and cheapest that might serve your purposes is the scan-in-a-box:
https://www.scaninabox.com/
Great piece of kit. There are plenty of cheaper scanners around - but they don't really work :-)
Printerwise, start here:
https://tevo3dprinterstore.com/produ...er-3d-printing
Have a look at this:
https://tevo3dprinterstore.com/colle...3d-printer-kit
Now a lot depends on what material you want to print with. If you want to use ABS - you'll need a heated enclosure around the print area, otherwise it's just crap.
Pet-g is probably going to be your best bet and that doesn't need heated enclosure and is a lot more durable than abs.
Cost wise, once you've got the equipment, it varies on what material you are using from £10 a kg on up to £60-70 for more specialised materials.
Weightwise, for thin panels (1-5mm) weights will be equivalent, for thicker panels - because 3d printers don't need to make everything solid - the weights should be a lot less.
What we actually need is some idea of your budget, and whether you or anyone where you work, has any computer aided design experience.
Don't sweat finish too much, you'll pretty much always need to do a little sanding, and you'll need to paint it anyway to match the car.