Skip advert
Advertisement

Posaidon’s modified Mercedes-AMG A35 packs A45 S-rivalling 395bhp

A new turbocharger has given the Mercedes-AMG A35 a healthy bump in output, bringing it close to its £50k sibling 

Posaidon has already been playing around with AMG’s A45 S, lifting output to 518bhp for a ludicrous 201mph top speed, but now the German tuner has worked its magic on the lesser A35.

Its new RS 400 kit will lift the standard 2-litre turbocharged petrol engine to 395bhp and 405lb ft of torque, a 93bhp and 111lb ft gain over standard. To reach these figures, more than an ECU tune is required, with Posaidon swapping the A35’s standard turbocharger for a more powerful and thermally efficient unit. The seven-speed DCT also receive software tweaks to help extract its maximum performance.

Advertisement - Article continues below

> This Mercedes-AMG A45 S has a 201mph top speed

Its 0-62mph time now comes in a brisk 4sec, seven tenths sooner than factory, and just a tenth slower than the £50,000 A45 S. Perhaps more impressive is the new 183mph top speed, raised from the standard 155mph, thanks to a removal of the electronic speed limiter.

Posaidon also offers a lesser ECU tune to bring output to 350bhp and just over 350lb ft of torque. In this form, four tenths is lopped off the 0-62mph sprint in this form, bringing the sprint down to 4.3sec.

Local pricing and availability is yet to be confirmed, but if it keeps costs reasonable a modded A35 that looks and goes just like its substantially more expensive A45 S sibling could make it seem a relative bargain.

Skip advert
Advertisement

Recommended

BMW M135 v Mercedes-AMG A35 – which is the best £50k hot hatch?
A35 v M135
Group tests

BMW M135 v Mercedes-AMG A35 – which is the best £50k hot hatch?

BMW’s M135 xDrive has found some much‑needed focus with its new M Dynamic Pack, but is it enough to give it the edge over Mercedes‑AMG’s A35?
11 Jan 2026
Skip advert
Advertisement

Most Popular

This 900bhp Lotus Emeya has Bugatti specs, but carrying passengers reveals a problem
Lotus Emeya
Opinion

This 900bhp Lotus Emeya has Bugatti specs, but carrying passengers reveals a problem

A well-engineered electric performance car can be an impressive thing to drive but carrying passengers is very different from a petrol-powered equival…
2 Oct 2026
​Best hot hatchbacks 2026 – fast, fun and family friendly cars
Best hot hatchbacks 2026
Best cars

​Best hot hatchbacks 2026 – fast, fun and family friendly cars

The new Peugeot 208 GTi and Vauxhall Corsa GSE join a great variety of current hot hatchbacks that we've ranked
6 Oct 2026
Ferrari Enzo v LaFerrari – analogue hypercar meets its digital successor
Ferrari Enzo v Ferrari LaFerrari
Features

Ferrari Enzo v LaFerrari – analogue hypercar meets its digital successor

When Ferrari launched its first hybrid hypercar, the LaFerrari, Henry Catchpole pitted it against the Enzo, its iconic analogue predecessor
4 Oct 2026