316

The 316 was introduced in 1999 and has the smallest engine available in the E46, the 1.9 L BMW M43 producing 105 hp (78 kW) and 165 N·m (122 ft·lbf).[17] Like all 4 cylinder models, it was not released into the United States market.[9] In 2001, the 316 was given a smaller, yet more powerful, 1.8 L BMW N42 engine producing 116 hp (87 kW) and 175 N·m (129 ft·lbf).[18]
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318

The 318 was introduced in 1998 with the same engine as the 316, the 1.9 L BMW M43.[18] However, it was designated the M43B19TU (technical update) and had dual balancing shafts which increased horsepower to 118 hp (88 kW) and torque to 180 N·m (133 ft·lbf). Along with the 316, the 318 received an updated engine in 2002: the 2.0 L BMW N42. It produced 143 hp (107 kW) and 200 N·m (148 ft·lbf).[18] The 318 was not released into the United States market.[9]