Mercedes-Benz GL-Class Remap & BHP Figures

Find your engine

X166 (2012 onwards)X164 (2006–2012)

Mercedes-Benz GL-Class GL 450 power & torque delivery

Power & torqueindicative curve, scaled to the published figures

Stage 1

510 bhp from 367+143 bhp820 Nm from 500+320 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 367+143 bhp820 Nm from 500+320 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.

X166 (2012 onwards)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
GL 4002996cc · Petrol	333 bhp 480 Nm	400 bhp+67 580 Nm+100	—	£699	Book
GL 4504663cc · Petrol	367 bhp 500 Nm	510 bhp+143 820 Nm+320	—	£699	Book
GL 5004663cc · Petrol	435 bhp 700 Nm	510 bhp+75 820 Nm+120	—	£699	Book
GL 63 AMG5461cc · Petrol	558 bhp 760 Nm	620 bhp+62 900 Nm+140	—	£999	Book
GL 350 Bluetec2987cc · Diesel	258 bhp 620 Nm	290 bhp+32 690 Nm+70	—	£549	Book

X164 (2006–2012)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
GL 4504663cc · Petrol	340 bhp 460 Nm	355 bhp+15 485 Nm+25	—	£699	Book
GL 5005461cc · Petrol	388 bhp 530 Nm	405 bhp+17 570 Nm+40	—	£699	Book
GL 320 CDI2987cc · Diesel	211 bhp 510 Nm	260 bhp+49 600 Nm+90	—	£549	Book
GL 350 CDI2987cc · Diesel	211 bhp 510 Nm	275 bhp+64 600 Nm+90	—	£549	Book
GL 320 CDI2987cc · Diesel	224 bhp 510 Nm	260 bhp+36 600 Nm+90	—	£549	Book
GL 350 CDI2987cc · Diesel	224 bhp 510 Nm	275 bhp+51 600 Nm+90	—	£549	Book
GL 350 CDI2987cc · Diesel	265 bhp 620 Nm	295 bhp+30 700 Nm+80	—	£549	Book
GL 420 CDI3996cc · Diesel	306 bhp 700 Nm	350 bhp+44 810 Nm+110	—	£549	Book
GL 450 CDI3996cc · Diesel	306 bhp 700 Nm	350 bhp+44 810 Nm+110	—	£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 GL-Class 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 GL-Class remapping questions

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

Every Mercedes-Benz GL-Class engine is different, which is why they are listed separately above. At the top end the GL 450 picks up 143bhp, going 367bhp to 510bhp with torque up to 820Nm.

How much is Stage 1 tuning on a Mercedes-Benz GL-Class?

A Mercedes-Benz GL-Class Stage 1 is from £549. Finance is 0% over 6 months with Bumper, or choose Pay in full when you book and pay with Klarna.

What happens to my warranty and insurance if I tune my Mercedes-Benz GL-Class?

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 GL-Class can be put back to its factory software at any point.

Can the remap be reversed, and how long does it take?

Allow roughly two hours for Stage 1, including any ECU unlock on our own bench. Everything is reversible: the Mercedes-Benz GL-Class 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 CLS E-Class G-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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