I agree, that the E46 3-series looks better than the E90 and E92 in general. However you really can't just buy a car for its shape and looks.

The M3 will be a bit hard-edged as a daily driver, and will consume more fuel. The S54 engine is a high-revver, and while the power delivery is smooth, peak torque 262 lb/ft occurs @ 4900rpm. In the N54 motor, the torque curve is like a diesel: peak 300 lb/ft comes on @ 1500 and stays till 5000rpm. In addition, M cars are consumption animals..........they consume fuel, oil, and wear out parts quickly. Kinda like a race car. It can be a bit persnickety in extreme cold weather too.

I love the M3....I really do. I hope to get one someday off the used market. However, if it's going to be used as a daily driver, there are more practical choices.

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2014 Mazda 3 GT: Ø Consumption: (click for details)