BMW doesn't make a 323d. lots of diesels in the line-up already, the story goes - expensive and dicy to try and squeeze another engine in to the near-invisible gap between the 320d and the 325d. So, in the event you want BMW's lovely bi-turbo four-pot in your life, you'll must make do with the 123d.
Unless, that is, you go to Alpina, who will whip you up a 3-Series with the 2.0-litre diesel out of the 123d, with a revised engine management as well as a brand spanking new exhaust technique. This is nice.
they like the stats . 214bhp. 0-62mph in 6.9 seconds. 152mph top speed. Yes, that's Golf GTI-beating performance from a automobile that'll return 52mpg. That's 150bhp per tonne. From a diesel. basically astonishing.