Originally Posted By: fdcg27
It's a fashion thing.
A few decades back, European imports always had amber turn signal lenses at the rear.
American and Japanese makers followed.
More recently, Euro cars have had only red lenses at the rear, and American and Japanese and Korean makers have followed.
I like amber rear turn signals, but BMW and Mercedes have decided that red is a more premium look now, so the rest have followed.
Japan mandates amber turn signals on every vehicle. Many people will buy taillights from Japan (see Toyota Cavalier) to set apart their vehicles. I have come to like amber turn signals, although the red turn signal is easier to make look nice.