Mercedes GL-Class ECU Remapping & Engine Tuning
We have remap figures for 12 Mercedes GL-Class engines across three generations. Petrol engines gain +7% to +19% power and diesels +11% to +29%. The largest bhp increase is on the GL-Class 66 Gl500 Turbo 4.7: 402 to 478 bhp (+76 bhp, +18%). Five more engines are in development. Book your GL-Class in at our Burnley workshop on 01282 779 000, or find a local dealer.
Speak to an ECU Remapping Expert
Contact Us14 Day ECU Remapping Money Back Guarantee!
WarrantyGot a Question about ECU Remapping & Tuning?
View FAQs| Generation | Years | Engines | Power gain | Largest gain |
|---|---|---|---|---|
| GL-Class 64 | 2007–2012 | 8 | +7% to +29% | +62 bhp (+29%) Gl 350 Cdi |
| GL-Class 65 | 2007–2012 | 3 | +19% | +72 bhp (+19%) GlS450 4.6 Biturbo |
| GL-Class 66 | 2013–2019 | 6 | +15% to +18% | +76 bhp (+18%) Gl500 Turbo 4.7 |
| Mercedes GL-Class 64 | Original BHP | Remapped BHP | Original Torque (Nm) | Remapped Torque (Nm) |
|---|---|---|---|---|
| Gl 320 Cdi 224 BHP 2007-2012 | 224 | 259 (+15%) | 510 | 575 (+12%) |
| Gl 350 Cdi 208 BHP 2007-2012 | 208 | 270 (+29%) | 510 | 598 (+17%) |
| Gl 350 3.0 CDI 221 BHP 2007-2012 | 221 | 259 (+17%) | 510 | 602 (+18%) |
| Gl 350 3.0 CDI 261 BHP 2007-2012 | 261 | 299 (+14%) | 620 | 697 (+12%) |
| Gl 350 3.0 CDI 283 BHP 2007-2012 | In Development | |||
| Gl 420 Cdi 306 BHP 2007-2012 | 306 | 340 (+11%) | 700 | 770 (+10%) |
| Gl 450 340 BHP 2007-2012 | 340 | 365 (+7%) | 460 | 480 (+4%) |
| Gl 500 388 BHP 2007-2012 | 388 | 420 (+8%) | 530 | 570 (+7%) |
| Mercedes GL-Class 65 | Original BHP | Remapped BHP | Original Torque (Nm) | Remapped Torque (Nm) |
|---|---|---|---|---|
| GlS450 4.6 Biturbo 362 BHP 2007-2012 | 362 | 434 (+19%) | 550 | 682 (+24%) |
| GlS550 4.6 Biturbo 429 BHP 2007-2012 | In Development | |||
| GlS63 5.5 Biturbo 537 BHP 2007-2012 | In Development | |||
| Mercedes GL-Class 66 | Original BHP | Remapped BHP | Original Torque (Nm) | Remapped Torque (Nm) |
|---|---|---|---|---|
| Gl260 2.0 Turbo 208 BHP 2013-2019 | In Development | |||
| Gl250 2.0 CDI 227 BHP 2013-2019 | In Development | |||
| Gl350 3.0 CDI 253 BHP 2013-2019 | 253 | 294 (+16%) | 620 | 692 (+11%) |
| Gl400 Turbo 330 BHP 2013-2019 | 330 | 382 (+15%) | 480 | 562 (+17%) |
| Gl450 Turbo 362 BHP 2013-2019 | 362 | 424 (+17%) | 500 | 582 (+16%) |
| Gl500 Turbo 4.7 402 BHP 2013-2019 | 402 | 478 (+18%) | 600 | 722 (+20%) |
Frequently asked questions
How much power does a remap add to a Mercedes GL-Class?
Petrol engines gain +7% to +19% power and diesels +11% to +29%. The full figures for each engine are in the tables above.
Which GL-Class engine gains the most from a remap?
The GL-Class 66 Gl500 Turbo 4.7 gains the most: 402 to 478 bhp (+76 bhp, +18%). Torque rises from 600 to 722 Nm (+20%).
Which GL-Class generations do you have remap figures for?
We have figures for three generations: the GL-Class 64 (2007–2012), GL-Class 65 (2007–2012) and GL-Class 66 (2013–2019).
Are remaps available for every GL-Class engine?
Not yet. Five of the 17 engines listed above are still in development. Call our Burnley workshop on 01282 779 000 for an update.
Where can I get my GL-Class remapped?
Book it in at our workshop in Burnley, Lancashire, on 01282 779 000, or find a local remap dealer in our dealer directory.
How we develop your remap
Our remaps are developed in-house at our facility in Lancashire, and cars are developed on our Dynojet 424xLC² dyno. Read more about dyno tuning at BHP UK.
Related:Petrol ECU tuning · Diesel ECU tuning · All Mercedes remaps · Mercedes E-Class · Mercedes G-Class · Mercedes GLA-Class · Mercedes GLC-Class
Our Products & Services
All of our software, programming and tuning services are designed and built in-house and are designed to enhance your vehicle and bring out it’s pure & true performance potential.
© 2011 - 2026 BHP UK. All rights reserved.