Some would argue that a muscle car must have the following attributes to qualify (otherwise, it's something else entirely):

* Large displacement V-8 engine (Nothing smaller than 350 cubic inches or 5.7 liters makes the cut)

* No electronic traction or stability controls of any kind

* Power output disproportionate to braking/handling ability

Under these rules (which I agree with!), the last car to qualify was the 1979 Pontiac Trans-Am and Formula Firebird equipped with the 400 V-8 and 4-speed manual transmission.

It may not have been the fastest, or most powerful - but it was most definitely a muscle car - and arguably, the very last of the species....