Why does my Polo tdi crank but does not start?

If your Polo TDI cranks but doesn't start, it could be due to several issues. Common causes include a lack of fuel reaching the engine, a faulty fuel pump, clogged fuel filters, or issues with the immobilizer system. Additionally, problems with the battery, starter motor, or ignition system could also prevent the engine from starting. It's best to perform a diagnostic check to pinpoint the exact cause.