1973 Mercury Cougar XR-7

The 1973 Mercury Cougar XR-7 came with several engine options, depending on the buyer's preferences and trim level. Here's a breakdown of the engines available that year:

Standard Engine:
351 cubic inch V8 (5.8L) 2-barrel carburetor

Output: ~168–177 horsepower (net)
Yes, the 1973 Mercury Cougar XR-7 was available in yellow — specifically, Medium Bright Yellow (Ford color code 6E) was one of the factory exterior paint options that year.

It was a popular color in the early '70s, part of Mercury's bright and bold palette.

The XR-7 trim, being the luxury version, could be ordered with special paint and vinyl roof combinations — sometimes in white or black over yellow.

Ford and Mercury often used the same color codes across their lineup, so "Medium Bright Yellow" could also be found on Mustangs and Torinos.