Not necessarily.

Go up to Scandinavia (here we see Hedemora, Sweden) and you'll find a serious turbo diesel W123 tuning scene with hundreds and hundreds of horses pouring out those sooty exhausts. The most famous of these cars is the Black Smoke Racing wagon drifter, but there are bunches of these tuned Mercs.

Never doubt the tuning population to turn the most staid vehicle into a complete burnout machine.