A 123 series is the E series sedan of the late seventies to mid eighties.
What is it about the plain old 123's I love so much? As an everyday car, you can't beat them. For me, it's the diesels in this class that really stand out.
The diesels are amongst the most reliable and economical cars on the road. While they are not the quickest off the mark, their handling and braking performance resembles that of a sports car, not taxi (which many have been used for).
Below is a photo of my current 123, a 240D.