Best Tuning Chips for Mercedes-Benz S-Class (2005 – 2013)

Updated January, 2025

Price: £109 – £399

Looking for Mercedes-Benz S-Class Car Tuning Chip and want to know what’s available, which one is best and more information? We’ve answered all of this and more below.

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HP Improvements for your model
What are Tuning Chips?
Why Choose RaceChip
Compare RaceChip products
Are tuning chips safe to use?
RaceChip Reviews
Installing RaceChip
Videos

View Mercedes-Benz S-Class Chips

Mercedes-Benz S-Class Car Tuning Chip Available

The table below gives you an indication of the range of tuning chips available for Mercedes-Benz S-Class. If there are performance chips available from our preferred manufacturer, RaceChip, then you’ll be able to see how the performance gains you can get from each of their chips.

Model Variant	S Chip HP increase	RS Chip HP increase	GTS Chip HP increase
S 420/450 CDI (320 HP/ 235 kW)	S Chip: + HP	RS Chip: +63 HP	GTS Chip: +79 HP
S 250 CDI 204 HP (150 kW)	S Chip: +28 HP	RS Chip: +35 HP
S 320 CDI 235 HP (173 kW)	S Chip: +45 HP	RS Chip: +53 HP	GTS Chip: +64 HP
S 320 CDI 211 HP (155 kW)	S Chip: +24 HP	RS Chip: +29 HP	GTS Chip: +35 HP
S 350 CDI 235 HP (173 kW)	S Chip: +45 HP	RS Chip: +53 HP	GTS Chip: +64 HP
S 350 BlueTEC 258 HP (190 kW)	S Chip: +45 HP	RS Chip: +57 HP
S 500 CGI 435 HP (320 kW)	S Chip: +46 HP	RS Chip: +69 HP
S 63 AMG 544 HP (400 kW)	S Chip: +54 HP	RS Chip: +82 HP
S 63 AMG 571 HP (420 kW)	S Chip: +56 HP	RS Chip: +85 HP
S 65 AMG 630 HP (463 kW)	Check website for chip availability
S 600 517 HP (380 kW)	Check website for chip availability
S 65 AMG 612 HP (450 kW)	Check website for chip availability
S 63 AMG 525 HP (386 kW)	Check website for chip availability
S 450 340 HP (250 kW)	Check website for chip availability
S 350 272 HP (200 kW)	Check website for chip availability
S 300 231 HP (170 kW)	Check website for chip availability
S 350 CGI 306 HP (225 kW)	Check website for chip availability
S 280 231 HP (170 kW)	Check website for chip availability
S 500 388 HP (285 kW)	Check website for chip availability

What Are Tuning Chips?

A tuning chip is a small electronic device that plugs into your car’s existing wiring (in your case a Mercedes-Benz S-Class). The chip then modifies your engine’s mapping in order to take advantage of performance and efficiency reserves or improvements.

Essentially the chip allows you to make full use of the power and torque that your engine is capable of safely producing.

Most tuning boxes can be installed at home by you, simply following a few instruction videos is usually enough.

Many people choose tuning chips over remaps because they can be unplugged simply to return to factory settings and are quick and easy to install.

For further information, this article from AutoExpress explains more about tuning chips.

Why Choose RaceChip?

RaceChip are recognised Worldwide for their incredible performance chips. They’re known to be extremely safe, reliable, easy to install and deliver incredible performance and fuel economy. Their chips are specifically configured for your car, and when we say that we don’t just mean a Mercedes-Benz S-Class, they go to the detail of tuning it specifically for the S 420/450 CDI (320 HP/ 235 kW) variant, for example.

They also offer some of the best prices on the market, combined with the peace-of-mind engine warranty on some of their products, it’s a no brainer to choose RaceChip.

Compare RaceChip products

RaceChip offer 4 different tuning boxes, as well as other products such as pedal tuning products. The 4 tuning chips are

S – this product offers in the region of a 20% HP and torque increase to your standard car. It has 5 fine-tuning mapping settings and can deliver around 15% improved MPG.
RS – The RS offers in the region of a 25% HP and torque increase to your standard car. It has 6 fine-tuning mapping settings and can deliver up to 20% improved MPG. It also benefits from a 1-year engine warranty up to £2,400.
GTS – The GTS chip offers in the region of a 30% HP and torque increase to your standard car. It has 7 fine-tuning mapping settings and can deliver up to 20% improved MPG. It also benefits from a 2-year engine warranty up to £4,000. Plus you get 1 free reprogramming if you want to fit the product to another car at a future date.
GTS Black – The GTS Black is similar to the GTS but offers an engine warranty up to £8,000 and includes a warm-up timer function.

Are tuning chips safe to use?

In short yes. But it is worth reading up on this. If you take advantage of the additional power your car can deliver using a chip, when at full power, your engine will be under additional strain.

It’s worth noting that the chips are designed to keep the power within the safe limits of the engine.

Read more info from RaceChip here for peace of mind.

RaceChip Reviews

The reviews for both the product and the company are fantastic. In fact I actually use a RaceChip product on my car and that’s what encouraged me to start this blog CarTuningChips.co.uk

It’s definitely worth spending a bit of time doing your own research and looking to see if you can find any reviews for RaceChip tuning boxes specifically for the Mercedes-Benz S-Class.

Trustpilot is of course a great, reliable source of reviews if you want to see some independent feedback on the company and their chips here.

Installing RaceChip

Installing your RaceChip Tuning box is really simple, in fact the whole process only takes around 15 minutes. RaceChip offers a dedicated section to installation here, https://www.racechip.co.uk/service-support/installation.html but you’ll also get instructions for your chip when you buy it.

There are also lots of installation videos provided by RaceChip here https://www.youtube.com/channel/UCs2yoCLHuI-48FwzI6rn7Sg

YouTube Videos

We’ve also run a search below for you for tuning chips for the Mercedes-Benz S-Class.

All that’s left for you to do now, is head over to RaceChip to find the right tuning chip for your Mercedes-Benz S-Class. Enjoy the extra power!

Mercedes-Benz S-Class (2005 – 2013) Car Tuning Chip