Mercedes C-Class Diesel Chip Tuning Boxes

Advanced diesel chip tuning boxes guaranteed to boost performance for the Mercedes C-Class range.

When you opt for a CHIP Express™ digital tuning system, you are choosing an innovate and bespoke tuning solution that has been specifically programmed and setup for your particular engine. As such, it works in harmony with all of the built-in engine safety parameters of your Mercedes C-Class. Choose the safest system you can, from a respected and trusted company, and start enjoying significantly improved performance and economy!

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Feedback From Our Mercedes C-Class Customers

Steve from Southampton with a Mercedes W203 C200 CDI 122 said: First surprise: Having ordered my unit around 4pm on Friday afternoon, I was most surprised and very pleased to receive it first thing on Saturday morning. Second surprise: Ease of fitting. Third Surprise: The overall difference it has made to the car. I own a Mercedes C200 CDI and have always felt that Mercedes got it wrong with this model; however I bought it and am stuck with for the foreseeable future. Your unit has turned it into what it should be, it is now smoother, quieter, responds better and the difference in fuel economy is nothing short of outstanding. Today on a regular trip from Southampton to North London and back I saw the mpg raise from 42.1mpg (average) to 51.2mpg (overall average for the round trip) and apart from road works (M3 & M25) and typical M25 hold ups, I was driving at normal motorway speed (outside lane with flow of traffic).I was that impressed I even stopped in the services on the way back and took a photo of the trip computer display. It was showing the following: From Start 152ml / Av speed 45mph/ 51.0mpg!
Les from Durham City with a Mercedes W204 C250 CDI 204 said: Mercedes C250 Estate (S204) AMG 2014. Fitted the chip to the car a few days ago and in terms of power and torque... WOW!... what a difference! The car has a new lease of life (even though it is only 2 years old). The torque increase is obvious - the car now picks up speed much more smoothly and evenly in both economy and sport mode. As for acceration in sport mode, its bordering on scary when I give it its freedom with my right foot... 50mph to 70mph was achieved in seconds, and I reckon if I fit it with wings it might just take off! Even my other half noticed the difference - and she's no petrol head. Lets hope the fuel consumption increase is equally spectacular - if I can keep my right foot off the gas! FOLLOW UP: I had a chance to take it for a run over the weekend... MPG up to 60.1 MPG on the same route in the same traffic conditions and I used to get 46 MPG on if I was lucky.
Steve from Salisbury with a Mercedes W204 C220 CDI Blue Efficiency 170 said: Originally bought this tuning kit for my Mercedes ML280. The difference in torque, acceleration, smoothness and driveability was excellent and immediate. I sold the ML and Bought C220 Blue Efficiency, the same kit that I used for the ML280 was returned to CHIP Express for reprogramming to the C220. It took 48hrs from returning to receiving the replacement and less than 10 minutes to fit, the car has been transformed into the car it should always have been! Excellent service (rare these days), I highly recommend this product!
Lee from Bromborough with a Mercedes W204 C220 CDI 170 said: Recently bought the chip for Merc C220, super impressed! Drove down to London this weekend at 67MPG, no lag, improved performance - exceptionally pleased. A great product that's paying for its self already!
Richard from Kineton with a Mercedes W204 C250 CDI Blue Efficiency 204 said: Just a short note to say thank you. Your customer service is like an oasis in a sea of mediocrity. Nothing is to much trouble - I cannot commend your company highly enough. I have now had one of these chip's well over 5 years on 2 different vehicles. The results on both were great. I initially bought the box for economy but the side effects of smoother delivery of power and more of it were a welcome bonus. I have recommended to friends and colleagues who have bought them too!
Robert from Brierley Hill with a Mercedes W204 C200 CDI 136 said: I can not believe the change in my car with this chip. Power is just unreal to the standard setup on my C200. Mercedes need to improve the programming on there cars. This diesel chip is well worth the money paid.
Kaj from Waterlooville with a Mercedes W204 C200 CDI 136 said: I received the chip tuning box next day by special delivery. Opened it up and had a close look then took some time to read the instruction manual before fitting. I did not change the settings on the box, just kept them standard. Left the engine on idle for few minutes and checked for any error messages or lights on the dash, there were none. Car was idling as normal and I could feel the engine running smooth. Switched it off and finished the installation. I could not wait to jump in the car and test drive it! Well, first impressions are great; the car felt very different with a lot more power, acceleration is fantastic. I drove a good 20 miles. Felt like I had a lot more power in low gears as well as high gears and I didn’t have to press on the accelerator to much. The 60 mile journey to work this morning felt so much better. I was hardly touching the pedal at 70mph and the trip computer gave a reading of 55mpg compared to 47mpg average. I will be recommending you to my friends.
Ashley from Dumfries with a Mercedes W204 C220 CDI 170 said: I can't tell you just how very thrilled I am with your product which I fitted with no difficulty whatsoever, a few days ago. The car has been totally transformed! All the claims made in your advertising have been met, and, in my mind, superseded. Additionally, to come across a company with such high standards of customer service, is refreshing to say the least. Well done for producing a product that has such an ability to greatly increase our enjoyment of our vehicles performance, with the added benefit of improved fuel economy as well. I shall definitely be recommending CHIP Express to all my friends.
Chris from Rugby with a Mercedes W204 C220 CDI Blue Efficiency 170 said: I fitted this little box of tricks and to be honest I am one of the world’s most sceptical when it come to bold claims, also I am no mechanic, in fact the most I ever do is top up the oil, water and tyres. Fitting the unit was so easy even I could do it, instructions so clear you can’t go wrong. My first impressions of what this chip unit is doing is amazing, most of all is the increase in fuel economy, its early days but it looks like a 15% improvement, the power output has also increased by a good margin making the car much more fun to drive.
Charlie from Eastleigh with a Mercedes W205 C220 CDI BlueTEC 170 said: The "Chip" is everything you say.... my MPG coming back from Gatwick was up to 67 MPG.... due in part to the speed restrictions.... but never the less, its at least 5-8 MPG greater than before! The car also changes gear more readily as well, I have not had the opportunity to fully exercise the increase in torque yet, but I don't expect it to disappoint!
Peter from Bangkok, Thailand with a Mercedes W205 C220d 194 said: Many thanks for your prompt delivery all the way to Bangkok for my brand new W205 C220d. The Merc was somewhat fast with 194PS and 400Nm but after installation I am now a very happy camper, the car is now so much fun to drive and the throttle response is just amazing! You have made my year!

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What others are saying...

“As do many, I took the 'if it sounds too good to be true, it probably is' approach to performance chips. But CHIP Express were recommended by an impeccable source who had had experience with their product on my model of car - a Citroën C6 with the 2.7 HDi twin turbo diesel. Following a first rate response to a query, the product has delivered in spades. Ten days and more than 1000 miles of mixed town, country, low and high speed driving later I am certainly getting more than 10% more from a gallon, and probably 15%, and the performance is markedly better. Low speed response is immediate and has eradicated what I took to be baked-in lag in a big automatic turbo diesel, and mid-range acceleration is silky smooth, including up inclines. A very good car has been turned into the excellent car I had hoped for all along.”


Simon from Ketteringham

Citroen C6 2.7 HDi 204

“I must say l'm delighted with the improvement from your chip, its on the standard settings and the difference in the car is amazing!!! I have a smile on my face every time I get in the car, and there is about 5-7mpg improvement. With the mileage l do, l can see myself getting my money back in no time at all. So if your a doubter like me, don't be because its one of the best things l've ever bought!!!”


Ian from Manchester

Audi A6 MK4 3.0 BiTDI 313

“A friend recommended one of your "gadgets" a year ago and being not-very-techno (but Scottish and keen to save money!) I bought one. The gizmo has TRANSFORMED the performance of my Land Rover Freelander 2 TD4 AND improved the fuel economy by a genuine 15%; so much so that I have bought another one for our Freelander 2 SD4 which is now a REAL Q-car! (And of course saves fuel...) I have never written a review before (though strangely I do read them and take notice of them, whilst half-believing that they are written by the owner's chums!) so to have made me pick up pen & paper so to speak - I MUST be delighted! Thanks for making technology so simple and so successful!”


Andrew from Lochwinnoch

Land Rover Freelander (2) SD4 190

“Many thanks for your fantastic service! Unit ordered Sunday, delivered Tuesday am!! Unit now fitted and, as promised, the car is transformed. Winding country lanes tackled quite happily in fifth gear. Cruising on much smaller throttle openings and immediate response on acceleration. The car behaves as a mini car should behave. I had some initial doubts about spending quite a large amount of money on this item but it is worth every penny and would not hesitate to advise anyone to do similar.”


Alan from Coventry

Suzuki Swift 1.3 DDIS 75

“May I congratulate you on this diesel tuning product as it has made a noticeable difference to my Land Rover Discovery. I have tried other diesel tuning boxes for my previous vehicles (Kia Sorento, Peugeot 206 and Vauxhall Vectra)... and they all produced slight engine stuttering under certain load conditions. The CHIP Express system does not show any evidence of this and is equal to the likes of an ECU remap (which I have also had done before) for smoothness and noticeable power gains. This would be the only diesel tuning product I would recommend.”


James from Callington

Land Rover Discovery (3) 2.7 TDV6 190

“Be assured, this is NO gimmick. Arrived yesterday (less then 24 hours after the order was placed) and fitted today. The fitting was easy especially with the photos and instructions sent with the chip. The first thing I noticed was the responsiveness of the engine from a standing start, no more lag. I then went on a 30 minute drive both motorway and sideroads and my average fuel consumption went UP from 33.3mpg to 38.7mpg. My motorway speed varied from 60 to 85mph and the sideroads from zero to 40mph. I am so pleased with the whole result. This is worth every single penny paid. Thank you!”


Edwin from Bridgend

Ford Kuga MK2 2.0 TDCi 163