Modifying the engine of a vehicle can lead to impressive results, especially when it comes to an unassuming car like a regular city car. With some clever modifications and a bit of bravery, a boring hatchback can be transformed into a powerful sleeper. And that’s exactly what happened with the Volkswagen Polo featured in the video above.

Posted on the CCD Video YouTube channel, the 8-minute video showcases how the modest 1.9-liter turbo-diesel engine of the Polo can outperform stock cars that cost more than ten times its price. The base price for a Polo in Germany is around $22,800 (20,830 Euro).

Of course, the Polo in the video is far from stock. It has been upgraded with enhanced injectors, a better cam, a larger turbocharger, and improved intake and exhaust pipes. The sub-assembly remains stock, but there’s a surprising addition to the blacked-out Polo—nitrous oxide.

The first dyno run was done using only the boost from the turbocharger. The 1.9-liter TDI produced 366 horsepower and 587 Newton-meters of torque with approximately 40 pounds per square inch (2.8 bar) of pressure from the hybrid turbo.

When nitrous was introduced, the car achieved 472 hp and 789 Nm. But it didn’t stop there. After a couple more dyno runs, the small Polo managed to reach an impressive 513 hp and 865 Nm from its highly modified diesel engine.

This power output exceeds that of a base Porsche 911, which generates 379 hp from its twin-turbocharged 3.0-liter flat-six engine. It’s also more powerful than a Dodge Charger Scat Pack with its 485 hp 6.4-liter V8 engine. The Porsche starts at $114,400, while the Charger has an MSRP of $50,330.

Furthermore, the interior of the Polo has been stripped down, resulting in some weight reduction. This makes it a true sleeper car that can likely outperform many vehicles that are much more expensive than the modest Polo.

What do you think about this impressive performance? Watch the video above and share your thoughts in the comments section below.