Mercedes-Benz GLA · Stage 1

Mercedes-Benz GLA 45 AMG Stage 1 Remap

Name: Mercedes-Benz GLA 45 AMG Stage 1 Remap
Brand: Mercedes-Benz

On Mercedes-Benz GLA 45 AMG turbo petrol engines a Stage 1 remap recalibrates the boost pressure, ignition timing, fuelling and torque limiter maps. No hardware is changed and the original software is backed up. The same engine is sold with different stock outputs across generations, so the gain depends on your version.

How much bhp does Mercedes-Benz GLA 45 AMG chip tuning add?

It depends on the generation and the stock output. 45 AMG engines with 360–421 bhp reach 400–470 bhp with a Stage 1 remap; the largest gain is +83 bhp (H247 45 AMG - 387hp). Pick your version in the table below.

Book an appointment Mercedes-Benz GLA: all engines & Stage 1

Mercedes-Benz GLA 45 AMG: Stage 1 figures by generation and year

Year / chassis: X156 - 2017 - 2019

Engine	Power	Torque	Gain
Mercedes-Benz GLA 45 AMG 381hp	381 → 420 bhp	475 → 540 Nm	+39 bhp

Year / chassis: X156 - 2014 - 2016

Engine	Power	Torque	Gain
Mercedes-Benz GLA 45 AMG 360hp	360 → 400 bhp	450 → 520 Nm	+40 bhp

Year / chassis: H247 - 2020+

Engine	Power	Torque	Gain
Mercedes-Benz GLA 45 AMG - 387hp	387 → 470 bhp	480 → 620 Nm	+83 bhp
Mercedes-Benz GLA 45 AMG S - 421hp	421 → 470 bhp	500 → 620 Nm	+49 bhp

In Taiwan

Where can this be done near you?

GP Power ECU applies the software at its workshop in Hukou, Hsinchu, using EcuPrime-developed files; workshops can also order the file directly.

ENGINE FAMILY

About the Mercedes-AMG 45 2.0 turbo (M133 and M139)

The 2.0-litre four-cylinder turbo of the A45, CLA45, GLA45 and GLB45 is among the most ambitious engines of its class in power per litre: the M133 (360–381 hp, 2013–2019) followed by the M139 (387–421 hp).

How a Stage 1 remap works on the Mercedes-Benz GLA 45 AMG

Stage 1 recalibrates boost, ignition and fuelling within the limits of the original hardware. As the factory tune is already high, the gain is kept proportionate; torque arrives earlier and mid-range acceleration hardens noticeably. The DCT torque limit is respected.

Pre-remap checklist

Spark plugs and ignition coils; this engine is sensitive to plug life.
High-pressure fuel pump and injectors.
Intercooler circuit and boost leaks.
High-octane fuel and oil service intervals.

This section is based on GP Power ECU workshop experience; the power and torque figures come from the catalogue measurement above.

Frequently asked questions

How much bhp does Mercedes-Benz GLA 45 AMG chip tuning add?

It depends on the generation and the stock output. 45 AMG engines with 360–421 bhp reach 400–470 bhp with a Stage 1 remap; the largest gain is +83 bhp (H247 45 AMG - 387hp). Pick your version in the table below.

What is the difference between Stage 1 and Stage 2 on the Mercedes-Benz GLA 45 AMG?

Stage 1 is software only: no part of the car is changed and the figures in the table apply to this software. Stage 2 is software prepared for hardware changes such as the exhaust, intercooler or intake; the hardware comes first, then the software.

Will chip tuning damage the engine?

No. Values stay inside the safety margin the manufacturer leaves; engine, gearbox and turbo limits are not exceeded. Every file is verified with a road test and data logging. If the car needs maintenance first (worn injectors, blocked filter, weak clutch) we tell you before starting.

Will my fuel consumption go up?

With the same driving style it usually drops, because you hold the same speed at lower revs and less throttle. If you use the extra power, consumption naturally rises. It is down to your right foot.

How long does it take? Do I leave the car?

Most cars take 1–2 hours and you get the car back the same day; no need to leave it. Some models need the ECU removed, which takes longer — we tell you when booking.

Can I go back to stock later?

Yes. The original file is read and archived before any work. We restore the factory software free of charge whenever you ask.

What is checked on the Mercedes-Benz GLA 45 AMG before remapping?

Before working on the Mercedes-AMG 45 2.0 turbo (M133 and M139) we check: Spark plugs and ignition coils; this engine is sensitive to plug life. High-pressure fuel pump and injectors. Intercooler circuit and boost leaks. High-octane fuel and oil service intervals. If something needs attention, maintenance comes first; the remap is applied to a healthy engine.