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
Mercedes-AMG A35 review – the VW Golf R rival is still worth a second look
Mercedes-AMG A35
Reviews

Mercedes-AMG A35 review – the VW Golf R rival is still worth a second look

The Mercedes A-class was thought to soon be discontinued. On the contrary, even the hot A35 soldiers on. It’s still a good hot hatch
25 Sep 2025
Skip advert
Advertisement

Most Popular

Save £24,000 on a new BMW M4 Competition – massive discounts on M’s flagship coupe
BMW M4 discounted
News

Save £24,000 on a new BMW M4 Competition – massive discounts on M’s flagship coupe

If you've thought about buying BMW's M4 coupe now might be the time. Current discounts make them as cheap as an M2
3 Mar 2026
Audi RS5 review – Audi Sport's super estate eyes the BMW M3 Touring
2026 Audi RS5
Reviews

Audi RS5 review – Audi Sport's super estate eyes the BMW M3 Touring

Hybrid power provides Audi’s new super estate with a class leading 630bhp, but it comes at a price. Well two actually
2 Mar 2026
Renault 5 GT Turbo (1985-1991) review – the ultimate foil for Peugeot's 205 GTI
Renault 5 GT Turbo
Reviews

Renault 5 GT Turbo (1985-1991) review – the ultimate foil for Peugeot's 205 GTI

They don’t make them like the Renault 5 GT Turbo anymore. Reacquaintance with the 850kg hot hatch is a pallet cleanser
3 Mar 2026