Mercedes-Benz GLC / GLE / GLS Custom HP Tuners Tuning (2.0T M274/M264 / 3.0TT V6 M276 / 3.0L I6 M256 / 4.0L V8 M177)

Our HP Tuners custom calibrations for the Mercedes-Benz GLC, GLE, and GLS SUV lineup are built to enhance performance, throttle response, and drivability across every engine option. From the efficient 2.0L turbo four-cylinder to the 3.0L twin-turbo V6, the advanced 3.0L I6 with EQ Boost, and the flagship 4.0L AMG BiTurbo V8, our in-house tuning delivers sharper power delivery, refined transmission behavior, and reliable gains while preserving Mercedes-Benz durability.

Key Features

• Engine Coverage

  • GLC300 / GLE350 – 2.0L Turbo I4 (M274 / M264, 2016–2023)

  • GLC43 / GLE43 AMG – 3.0L Twin-Turbo V6 (M276, 2016–2019)

  • GLE53 / GLS53 AMG – 3.0L Turbo I6 with EQ Boost (M256, 2019–2023)

  • GLE63 / GLS63 AMG – 4.0L Twin-Turbo V8 (M177, 2016–2023, incl. S models)

• Transmission Support – Calibration for 7-speed, 9-speed, and AMG Speedshift gearboxes, refining shift timing, torque management, and launch control

• Custom Calibration – Adjustments available for intakes, intercoolers, downpipes, exhausts, turbo upgrades, fueling enhancements, and flex-fuel/E85 conversions

• Safe Performance – Tunes designed with optimized fueling, knock-safe ignition strategies, and smooth drivability

• Remote Tuning – Fully supported with HP Tuners MPVI2 and MPVI3 for secure file exchange and flashing

Benefits

• Faster throttle response and reduced turbo lag

• Horsepower and torque gains across the RPM range

• Stronger mid-range torque for towing, hauling, and highway passing

• Enhanced transmission performance for both daily comfort and spirited driving

• Reliable calibrations for stock and performance-modified AMG builds

Compatibility

Custom tuning is available for:

• 2016–2023 Mercedes-Benz GLC300 / GLE350 (2.0L Turbo M274 / M264)

• 2016–2019 Mercedes-Benz GLC43 / GLE43 AMG (3.0L TT V6 M276)

• 2019–2023 Mercedes-Benz GLE53 / GLS53 AMG (3.0L I6 Turbo M256 w/ EQ Boost)

• 2016–2023 Mercedes-Benz GLE63 / GLS63 AMG (4.0L TT V8 M177, incl. S models)

Process

1. Purchase your GLC/GLE/GLS custom tuning package.

2. Use HP Tuners to read your factory ECU calibration.

3. Provide your stock file and list of modifications.

4. Receive a calibration tailored for your exact setup.

5. Flash your tune and enjoy immediate improvements.

Professional Assurance

Every calibration is written in-house with a balance of drivability, power, and reliability. From luxury daily-driven SUVs to high-performance AMG models with upgraded turbos and fueling, our HP Tuners custom tuning delivers consistent, proven results across the Mercedes-Benz SUV lineup.

Meta Description (SEO)

Custom HP Tuners tuning for Mercedes-Benz GLC, GLE, and GLS (2016–2023). Support for GLC300/GLE350 (2.0T), GLC43/GLE43 AMG (3.0TT V6), GLE53/GLS53 AMG (3.0L I6 M256), and GLE63/GLS63 AMG (4.0L TT V8 M177). Improve horsepower, torque, and drivability.