Mercedes-Benz GLS 350d 258hp Remap

Name: Mercedes-Benz GLS 350d 258hp ECU Remap
Brand: Mercedes-Benz

Expected gains of +32 BHP and +70 Nm torque

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BHP+32 hp (12%)

Standard

258 hp

Tuned

290 hp

Torque+70 Nm (11%)

Standard

620 Nm

Tuned

690 Nm

Suitability

Good (6.5/10)

Gains Profile

Balanced

Headroom

Medium

Mercedes-Benz GLS 350d 258hp ECU Remapping

Considering an ECU remap for your Mercedes-Benz GLS 350d 258hp? A Stage 1 remap can take this 2015 - 2018 diesel engine from 258 BHP to 290 BHP and from 620 Nm to 690 Nm of torque (turbocharged). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz GLS can achieve.

How this engine compares

9thof 9 Mercedes-Benz GLS engines by power gain
51%of the 9,842 engines we hold gain data for see a smaller power increase
55%of engines with torque data see a smaller torque increase

Comparisons are calculated from our own recorded Stage 1 figures.

Assessment

The Mercedes-Benz GLS 350d 258hp is a 3.0L turbocharged diesel engine producing 258 BHP and 620 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 290 BHP and 690 Nm — a gain of around 32 BHP (12%) and 70 Nm (11%).

This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as moderate, based on the percentage gain available from the factory output.

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.

Technical Specifications

Fuel Type: Diesel
Aspiration: Turbocharged
Displacement: 3L
Capacity: 2987 CC
Type: Car
Engine Family: Mercedes-benz 3.0L Turbo Diesel

ECU & Transmission

Likely ECU Low confidence: Bosch EDC17-era diesel ECU (varies)
Gearbox Low confidence: Transmission varies by trim and market; check manual/automatic type and torque rating. At this torque level, transmission and driveline servicing history becomes especially important.

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Confirm Your Vehicle

MakeMercedes-Benz

ModelGLS

Generation2015 - 2018

Engine350d 258hp

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.

We recommend discussing your specific vehicle with a qualified remap professional before proceeding.

Engine	BHP	Gain	Torque	Gain	Score
400 (3.0T) 333hp	333 → 400	+67	480 → 580	+100	Good (7.5/10)
500 (4.7 V8 TT) 455hp	455 → 500	+45	700 → 850	+150	Moderate (5/10)
63 AMG 585hp	585 → 635	+50	760 → 935	+175	Moderate (5/10)