2001 BMW M3 GTR Beneath the beefy silhouette of the M3 GTR beats a powerful heart: a four-litre V8 engine delivering more than 400 bhp. Morgan attributes the gains to a new 'cannon-style' twin exhaust system and. 4.8-liter V8 as before, but this GTR version makes 375 horsepower instead of the standard 362 horsepower.
