Mercedes Gl 420 CDI 306
Remapping in Cardiff

Mercedes Gl 420 CDI 306: remap at a glance

• Fuel: Diesel
• Standard power: 306 bhp, remapped: 345 bhp (+39 bhp, +13%)
• Standard torque: 700 Nm, remapped: 785 Nm (+85 Nm, +12%)
• Service: stage 1 ECU remap, fully dyno tested

Diesel Mercedes GL-class: what changes with a remap

Modern diesels are held back by conservative factory calibrations. A remap updates the fuel and boost maps stored in the ECU, which is why drivers notice stronger acceleration from low revs and less need to change down on hills or when loaded.

For reference, CDI is the Mercedes-Benz name for its common-rail diesel engines.

How the Mercedes Gl 420 CDI 306 compares

Ranked by power gain against the other diesel GL-class engines (2 in total), the Gl 420 CDI 306 is 2nd, 1 bhp below the GL-class diesel average of 40 bhp.

Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 39 bhp and 85 Nm sits at or above that benchmark.

Remapping your Mercedes GL-class in Cardiff

Based around Cardiff, our team serves local drivers as part of the nationwide Remap Experts network. We regularly work with drivers in Pentyrch, Rumney, Riverside, Rhiwbina and Llandaff and nearby areas of Wales.

All our remaps are fully dyno tested, backed by a 30 day money back guarantee and covered by a lifetime software warranty. Request a quote online or call 0800 779 7864.

If you are closer to Gwent, Bristol and Midwales, those neighbouring Remap Experts sites can help too.