What is the difference between the Audi A2 1.4 TDI and 1.4 TDIe engines?

Can someone explain the technical differences between the 1.4 TDI and 1.4 TDIe engines in the Audi A2? Which one should I choose for better fuel efficiency and performance?

The main difference between the two engines is the addition of a stop-start system in the TDIe, which shuts off the engine when the car is stopped in traffic and automatically restarts it when you're ready to go. This improves fuel efficiency and reduces emissions. However, it does come at a higher price point compared to the standard TDI. Ultimately, it depends on your budget and driving preferences. I would recommend test driving both to see which one feels better for you.

In addition to the stop-start feature, the TDIe engine also has improved aerodynamics and lower rolling resistance tires, further enhancing its fuel efficiency. But keep in mind, the TDIe engine has a lower top speed compared to the standard TDI. If you want power and speed, go for the standard TDI. If you want maximum fuel efficiency, go for the TDIe.

I have personally owned both versions of the Audi A2 and have found that the TDIe is worth the extra cost for its fuel savings in the long run. Plus, with rising gas prices, it's definitely a wise investment. However, if you live in an area with mostly highway driving, the TDI might be a better choice for its higher top speed and better acceleration.