Name as many car manufacturers as you can within a 15 letter limit.

Kia DMC BMW GM VW AM.

Mg,Mb,BMW,KIA,GM,TVR

TVR MG AC Jaguar GM

V-O-L-K-S-W-A-G-E-N G-R-O-U-P

For Chevy Porsche GMC BMW Jeep Honda Volvo Kia peterbuilt freightliner.

All of them. There you go, 6 letters to spare.

Fca,GM,vw,BMW

GM,VW,Ford, Mini, BMW

Ford, daihatsu, Mitsubishi, Honda, McLaren, Lamborghini, Ferrari, Chevrolet, Dodge, Kia, Saturn, ariel,

GM Kia BMW Fiat MG(?)