Mercedes Diesel Tuning Chips

The most innovative and effective Mercedes diesel tuning chips you can buy!

Choose the tuning system with proven technology and a worldwide reputation – the tuning system specifically designed and calibrated for your vehicle. A CHIP Express™ plug-in diesel tuning box will boost your Mercedes's engine power, whilst reducing your fuel consumption. Buy the diesel tuning chip that has CE approval and safely transform your drive for the better!

Select your Mercedes model from the list below:

Feedback from our Mercedes customers:

  • David from Cambridge with a Mercedes CLS320 CDI 224 said:

    I am on third chip from Chip Express. I had one on my Rover 75 2.0 CDTi 131, then my Mazda 6 2.2D 163 and now on my Mercedes CLS320 CDI 224. I tried chips from other companies but they were all been sent back. This is the only chip I have had were you can feel the difference in the way the car performs. My Rover 75 was so much faster it was like a different car, I covered about 80.000 miles on that one. I then moved over to the Mazda 6 and would says this was a quarter as quick again and my fuel was so much better, I covered 60.000 miles with no problems. I recently upgraded my chip for use on my Mercedes CLS. The V6 engine is much smoother and more responsive. I have been using your chips for a few years now, covering thousands of miles each month as a chauffeur, your chips make driving so much better. Keep up the good work!

  • Neil from Nedlands Australia with a Mercedes S320 CDI 235 and C220 CDI 170 said:

    I bought the chips for around town fuel savings. I have just fitted chips to my Mercedes S320 CDI, and C220 CDI, and the results are fantastic. Both vehicles are smoother, and have much more low end torque. They upshift sooner, and hold onto gears longer on inclines. We have reduced our fuel consumption by 10% around town, and by 5% on country runs. Many thanks for your prompt and efficient service, Western Australia is a long way from Hertfordshire!

  • Benjamin from Midhurst with a Mercedes B180 CDI 109 said:

    I have just fitted one of your chips to the above vehicle, and I have to say that the improvement to both mid range performance and MPG has been amazing. Both my partner and I just cannot see why Mercedes do not run with these devices as standard. It makes a pretty gutless and dull car so much better. We did not, of course buy this car for its performance, my partner needed an automatic due to her bad knee, however both of us were surprised quite how dull it was to drive. I had known about these devices for some time but had not experienced them 1st hand. I have to say that it transforms the car into just what we want. Money well spent, thank you.

  • Steve from Salisbury with a Mercedes C220 CDI 170 Blue Efficiency 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!

  • Michael from Woking with a Mercedes CLC200 CDI 122 said:

    I am very pleased with the diesel tuning chip, the car is much more responsive and my MPG is better too. I will recommend your products to my friends.

  • Jim from Ontario, Canada with a Mercedes GL 350 CDI BlueTEC 211 said:

    My compliments! I've just installed the Chip Express on my 2012 Mercedes GL 350 Bluetec. The chip is connected correctly and operation is obvious the first time you use the throttle. Thank you for creating such a terrific product, I am very impressed! I will certainly promote your product to everyone here in Canada.

  • John from Boldon with a Mercedes CLS320 CDI 224 said:

    I have had the CHIP Express tuning chip fitted to my Merc CLS 320 CDI since 2009 and find it very good, power is increased for when needed and I achieve around 12% better fuel economy, spot on!

  • Kaj from Waterlooville with a Mercedes 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.

  • Chris from Rugby with a Mercedes 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.

  • Steve from Southampton with a Mercedes 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!

  • Richard from Washington USA with a Mercedes R320 3.0 CDI 215 said:

    I purchased an identical chip from you about 5 months ago after being less than impressed with my recent Mercedes R320 CDI performance. Well your chip made THE difference! I purchased a second R320 about 4 hours ago and am ordering a chip for that car before I even get the car next week! My brother-in-law also will be purchasing one from you in the near future! Thank you so much! FINALLY a device the delivers as promised.

  • Dennis from USA with a Mercedes ML320 BlueTEC 215 said:

    I just arrived back from a long trip... the results are simply amazing - far better than my best expectations. I got as high as 37 mpg on one segment of 250 miles on a four lane road and 36.7 on a 740 mile leg. Overall, I drove over 2500 miles and averaged 33.7 mpg which includes a lot or city driving. Driveability is unchanged or if anything, improved. Before, there was a turbo lag that was annoying at times. Thanks again for your help. Your device is superb.

  • Eden from Auckland NZ with a Mercedes GL350 CDI 224 Blue Efficiency said:

    I can not believe the difference, I was going to get rid off my new 2010 Benz GL, once a slug... now its a weapon, its unreal!! I also have a new BMW M3 but now my Benz is my favorite toy, cheers!