There are also 543 bhp and 469 bhp tunes from Renntech.
Renntech is a major name in Mercedes-Benz tuning, and the company's latest undertaking gives the A45 a significant power upgrade. While the stock output of up to 416 bhp (310 kilowatts) and 369 pound-feet (500 Newton-metres) is impressive, the company has kits coming in the first quarter of 2020 that can push the power as high as 592 bhp (442 kW).
To get the full 592-bhp output, the A45 requires a modified turbocharger, exhaust, and engine software. The same is true for Renntech's upcoming 543 bhp (405 kW) upgrade. If you don't want to make the mechanical changes, then the firm also has a tune making 469 bhp (349 kW) and 424 lb-ft (575 Nm) that only requires software changes.
The company doesn't make any performance claims for the upgrades at this time. The stock A45 S gets to 62 miles per hour (100 kilometres per hour) in 3.9 seconds. The extra power should shed a few tenths off that time.
See what the A45 can do:
- Watch Mercedes-AMG A45 drag race BMW M2 Competition and Audi RS3
- See the Mercedes-AMG A45 S hit its top speed limiter on the Autobahn
Renntech is working on other parts for the A45. By late February, customers can order an optional downpipe and sports catalytic converter. There's also an upgraded exhaust on the way that improves the vehicle's sound but retains the original catalytic converter. As another option, customers can add a remote-controlled exhaust valve module that lets the owner fully open the pipes regardless of driving mode.
The company is also working on some aesthetic upgrades for the A45. There are 19- and 20-inch wheels that are available in either cast or forged construction. The larger ones are available with an optional painted outer ring.