What is the problem with the BMW 320d N47 engine?

The N47's timing chain can stretch, and since it sits at the back of the engine the repair is costly. A metallic rattle at idle is the warning; the B47 that replaced it is more reliable.

Is the BMW 330d worth it over the 320d?

The six-cylinder 330d is smoother and not much thirstier on the open road, but servicing costs more. For high motorway mileage it is a sensible pick.

Can a diesel BMW 3 Series enter low-emission zones?

A Euro 6 diesel 3 Series, from around 2015 on, gets the C label and can enter low-emission zones. E90 diesels get the B, which Madrid and Barcelona restrict more and more.

Cars

Used diesel BMW 3 Series for sale in Spain

Found 1,216 cars

From €1,900 to €86,990, half under €17,900 · Typically 2018 with 139,927 km. Diesel was for years the dominant choice in the 3 Series, from the 318d to the six-cylinder 330d. The thing to know is the timing chain of the N47 engine, fitted at the back of the block in 318d and 320d cars from around 2007 to 2014.