Mercedes-Benz GLS Remap: Stage 1 BHP Figures

Find your engine

X167 (2019–2023)X166 (2015–2019)

Mercedes-Benz GLS 350d power & torque delivery

Power & torqueindicative curve, scaled to the published figures

Stage 1

380 bhp from 286+94 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

380 bhp from 286+94 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.

X167 (2019–2023)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
GLS 450 3.02996cc · Petrol	367 bhp 500 Nm	420 bhp+53 590 Nm+90	—	£699	Book
GLS 580 4.03982cc · Petrol	490 bhp 700 Nm	570 bhp+80 820 Nm+120	—	£699	Book
GLS 63 AMG V8 Bi-Turbo3982cc · Petrol	612 bhp 850 Nm	690 bhp+78 950 Nm+100	—	£999	Book
GLS 350d2987cc · Diesel	286 bhp 600 Nm	380 bhp+94 820 Nm+220	—	£549	Book
GLS 400d2925cc · Diesel	331 bhp 700 Nm	380 bhp+49 840 Nm+140	—	£549	Book

X166 (2015–2019)

Engine	Standard	Stage 1custom dyno tuning	Stage 2custom dyno tuning	Price
GLS 400 3.02996cc · Petrol	333 bhp 480 Nm	400 bhp+67 580 Nm+100	—	£699	Book
GLS 500 4.7 V84663cc · Petrol	455 bhp 700 Nm	500 bhp+45 850 Nm+150	—	£699	Book
GLS 63 AMG5461cc · Petrol	585 bhp 760 Nm	635 bhp+50 935 Nm+175	—	£999	Book
GLS 350d2987cc · Diesel	258 bhp 620 Nm	290 bhp+32 690 Nm+70	—	£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 GLS 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 GLS remapping questions

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

Every Mercedes-Benz GLS engine is different, which is why they are listed separately above. At the top end the GLS 350d picks up 94bhp, going 286bhp to 380bhp with torque up to 820Nm.

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

A Mercedes-Benz GLS 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 GLS?

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 GLS 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 GLS 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 GL-Class GLA GLB GLC GLE 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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