In the past I owned four BMW e46 M3s and they were all exhilarating to drive with awesome performance. The 135i I now own is as fun to drive as the e46 M3 beating it out just slightly from a performance standpoint, which says a lot about the 135i. It's a smaller car than I usually own, but it's nimble and sticks to the road like glue. The large brakes are definitely needed to stop this beast when it's hauling down the highway, and the exhaust growl when driving in Sport Mode is an aural pleasure. Fuel economy is okay, just about the same on the e46 M3, but my wife's 335i coupe gets a lot more MPG.
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