Mercedes-Benz CLS Remap: Stage 1 BHP Figures

Find your engine

C257 facelift (2021 onwards)C257 (2018–2021)C218 facelift (2014–2018)C218 (2010–2014)C219 (2004–2010)

Mercedes-Benz CLS 500 Bi-Turbo power & torque delivery

Power & torqueindicative curve, scaled to the published figures

Stage 1

510 bhp from 407+103 bhp820 Nm from 600+220 Nm

Tuned bhpTuned NmStock bhpStock Nm

Shape is indicative. Your real before & after curves are measured on our 4WD dyno on the day and you take the printout home.

Power & torqueindicative curve, scaled to the published figures

Stage 1

510 bhp from 407+103 bhp820 Nm from 600+220 Nm

Tuned bhpTuned NmStock bhpStock Nm

Shape is indicative. Your real before & after curves are measured on our 4WD dyno on the day and you take the printout home.

C257 facelift (2021 onwards)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
CLS 450 3.02999cc · Petrol	367 bhp 500 Nm	420 bhp+53 620 Nm+120	—	£699	Book
CLS 53 AMG2999cc · Petrol	435 bhp 520 Nm	460 bhp+25 620 Nm+100	—	£799	Book
CLS 220d 2.01950cc · Diesel	194 bhp 400 Nm	225 bhp+31 480 Nm+80	—	£549	Book
CLS 400d 3.02925cc · Diesel	330 bhp 700 Nm	380 bhp+50 820 Nm+120	—	£549	Book

C257 (2018–2021)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
CLS 350 2.01991cc · Petrol	299 bhp 400 Nm	350 bhp+51 470 Nm+70	—	£549	Book
CLS 450 3.02999cc · Petrol	367 bhp 500 Nm	420 bhp+53 600 Nm+100	—	£699	Book
CLS 450 3.02999cc · Petrol	389 bhp 500 Nm	420 bhp+31 600 Nm+100	—	£699	Book
CLS 53 AMG2999cc · Petrol	435 bhp 520 Nm	460 bhp+25 620 Nm+100	—	£799	Book
CLS 220d 2.01950cc · Diesel	194 bhp 400 Nm	220 bhp+26 460 Nm+60	—	£549	Book
CLS 300d 2.01950cc · Diesel	245 bhp 500 Nm	270 bhp+25 560 Nm+60	—	£549	Book
CLS 350d 3.02925cc · Diesel	286 bhp 600 Nm	380 bhp+94 800 Nm+200	—	£549	Book
CLS 400d 3.02925cc · Diesel	340 bhp 700 Nm	380 bhp+40 820 Nm+120	—	£549	Book

C218 facelift (2014–2018)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
CLS 4003498cc · Petrol	333 bhp 480 Nm	400 bhp+67 580 Nm+100	—	£699	Book
CLS 5004663cc · Petrol	408 bhp 600 Nm	510 bhp+102 850 Nm+250	—	£699	Book
CLS 63 AMG5461cc · Petrol	557 bhp 720 Nm	660 bhp+103 1100 Nm+380	—	£999	Book
CLS 63 AMG S5461cc · Petrol	585 bhp 800 Nm	660 bhp+75 1100 Nm+300	—	£999	Book
CLS 220 CDI2143cc · Diesel	170 bhp 400 Nm	220 bhp+50 500 Nm+100	—	£549	Book
CLS 250 CDI2143cc · Diesel	204 bhp 500 Nm	240 bhp+36 550 Nm+50	—	£549	Book
CLS 350 CDI2987cc · Diesel	258 bhp 620 Nm	290 bhp+32 690 Nm+70	—	£549	Book

C218 (2010–2014)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
CLS 3503498cc · Petrol	306 bhp 370 Nm	316 bhp+10 385 Nm+15	—	£549	Book
CLS 500 Bi-Turbo4663cc · Petrol	407 bhp 600 Nm	510 bhp+103 820 Nm+220	—	£699	Book
CLS 63 AMG Bi-Turbo5461cc · Petrol	525 bhp 700 Nm	620 bhp+95 900 Nm+200	—	£999	Book
CLS 63 AMG PPP5461cc · Petrol	557 bhp 720 Nm	620 bhp+63 900 Nm+180	—	£999	Book
CLS 250 CDI2143cc · Diesel	204 bhp 500 Nm	240 bhp+36 550 Nm+50	—	£549	Book
CLS 350 CDI Bluetec2987cc · Diesel	252 bhp 620 Nm	300 bhp+48 700 Nm+80	—	£549	Book
CLS 350 CDI2987cc · Diesel	265 bhp 620 Nm	300 bhp+35 700 Nm+80	—	£549	Book

C219 (2004–2010)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
CLS 350i3498cc · Petrol	272 bhp 350 Nm	292 bhp+20 375 Nm+25	—	£549	Book
CLS 350 CGI3498cc · Petrol	292 bhp 365 Nm	312 bhp+20 390 Nm+25	—	£549	Book
CLS 5004966cc · Petrol	306 bhp 460 Nm	326 bhp+20 485 Nm+25	—	£699	Book
CLS 5005461cc · Petrol	388 bhp 530 Nm	408 bhp+20 570 Nm+40	—	£699	Book
CLS 55 AMG5439cc · Petrol	476 bhp 700 Nm	515 bhp+39 800 Nm+100	—	£999	Book
CLS 63 AMG6208cc · Petrol	514 bhp 630 Nm	530 bhp+16 660 Nm+30	—	£999	Book
CLS 320 CDI2987cc · Diesel	211 bhp 510 Nm	260 bhp+49 600 Nm+90	—	£549	Book
CLS 350 CDI2987cc · Diesel	211 bhp 540 Nm	270 bhp+59 600 Nm+60	—	£549	Book
CLS 320 CDI2987cc · Diesel	224 bhp 510 Nm	260 bhp+36 600 Nm+90	—	£549	Book
CLS 350 CDI2987cc · Diesel	224 bhp 540 Nm	270 bhp+46 600 Nm+60	—	£549	Book

Every price on this page is a full custom dyno tune

Not a generic file bought in and flashed over the port. Your Mercedes-Benz CLS is strapped to our in-house 4WD dyno and the map is written for your car, on the day, from its own data.

Health check firstWe look the car over and read the fault memory before we touch anything. If something is wrong, you get told. We don't map over a problem.
Live data loggingBoost, timing, fuelling and temperatures all watched in real time under load: knock on the petrols, rail pressure and exhaust temps on the diesels.
Custom calibration on the dynoThe map is built and adjusted run by run against what your engine is actually doing, not what a file supplier assumed.
Before and after printoutYou leave with the graph: your standard figures and your tuned figures, measured on the same rollers, the same day.

Spread the cost. From £91.50/mo over 6 months at 0% APR with Bumper, interest free.
Split your purchase into 3 interest-free instalments with Klarna. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. Subject to status. Ts&Cs and late fees apply.
For Klarna, choose Pay in full when you book. How finance works ›

Mercedes-Benz CLS remapping questions

What gains can I expect from Stage 1 on a Mercedes-Benz CLS?

It depends which engine you have. Across the 36 Mercedes-Benz CLS engines we tune, the CLS 500 Bi-Turbo sees the biggest Stage 1 gain: 407bhp to 510bhp and 600Nm to 820Nm, up 103bhp. Every figure on this page is for that exact engine.

How much does it cost to remap a Mercedes-Benz CLS?

Stage 1 custom dyno tuning on a Mercedes-Benz CLS starts at £549. You can spread it over 6 months at 0% with Bumper, or choose Pay in full when you book and pay with Klarna.

Will remapping my Mercedes-Benz CLS affect my warranty or insurance?

You will need to tell your insurer, as with any modification, and it can affect a remaining manufacturer warranty. Every map is reversible, so the Mercedes-Benz CLS can be put back to its factory software at any point.

How long does it take, and is it reversible?

Allow roughly two hours for Stage 1, including any ECU unlock on our own bench. Everything is reversible: the Mercedes-Benz CLS can go back to its factory software on request.

Ways to pay

when you pay in full0% finance over 6 monthsCard & Apple Pay£50 deposit secures your slotHow finance works ›

Other Mercedes-Benz models

A-Class AMG GT AMG GT 4-Door Coupe B-Class C-Class Citan CL-Class CLA CLC-Class CLK E-Class G-Class GL-Class GLA GLB GLC GLE GLS M-Class R-Class S-Class SL SLC SLK SLS AMG Sprinter V-Class Vaneo Viano Vito X-Class All models ›

Whichever you pick, the total carries through to checkout, so pay in full by card, Apple Pay or Klarna, or secure the slot with a £50 deposit. Figures are typical for a healthy, standard vehicle; your before and after dyno printout shows exactly what your car makes. Your car’s actual output depends on its condition, fuel quality and any supporting modifications. Prices shown are for Stage 1 custom dyno tuning; locked ECUs (most BMW and Audi registered from mid-2020) carry an additional unlocking charge, confirmed when you book.

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Mercedes-Benz CLS Stage 1 Remap