Selected car
Mercedes CLS (C257) 400 d
2925 ccm - 250 kW (340 HK) - 700 Nm
Depending on which engine you have in your car, you have different power box alternatives. You have 2 choices for your Mercedes CLS (C257) 400 d. Please verify that you have selected the correct engine from the car list. These are the choices for 400 d with 340 HP. The product images are illustrative and colors may vary from actual product.
Choose chip type. The price includes customs, taxes and fees, no surprises!
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Alternative 1

Ultimate SENT
Special chip and software for cars with SENT technology.
GBP £399,-

Effect with chip
429 HP ( +26%)
429 HP ( +26%)
Torque with chip
855 Nm ( +22%)
855 Nm ( +22%)
Alternative 2

RXT Ultimate SENT
Set of both Ultimate SENT and RXT Power Booster. Maximum effect and fuel savings controlled from your drivers seat.
GBP £469,-

Effect with chip
434 HP ( +28%)
434 HP ( +28%)
Torque with chip
869 Nm ( +24%)
869 Nm ( +24%)
Product comparison
Ultimate SENT![]() ![]() ![]() i ![]() i ![]() i ![]() i ![]() i ![]() ![]() ![]() ![]() i | RXT Ultimate SENT![]() ![]() ![]() i ![]() i ![]() i ![]() i ![]() i ![]() i ![]() ![]() ![]() ![]() i |
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