Mercedes E 400 Hybrid (3.5i) 306 hp — Stage 1 file (+24 hp)

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Chip tuning for Mercedes E 400 Hybrid (3.5i) 306 hp ECU

Mercedes E (2013 - W212) 400 Hybrid (3.5i) 306 hp — premium hybrid engine of the passenger segment of the Mercedes-Benz Group AG (Mercedes-Benz, AMG, Maybach, Smart, EQ) group (Германия, 1926). Stage 1 chip tuning raises power from 306 to 330 hp (+24 hp, +8%) and torque from 370 to 400 Nm (+30 Nm). This engine ships with different ECU variants: Bosch MED17.7.1, Bosch MED17.7.3, Siemens/Continental VGS4-NAG2. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 3 configurations · 3 ECU variants.

4MATIC all-wheel drive is Mercedes' signature system, fitted to most models. The Mercedes-Benz Group AG (Daimler AG until 2022) comprises Mercedes-Benz, AMG, Maybach, Smart and the EQ line. AMG is the performance division of Mercedes (since 1967), building engines on the 'one man, one engine' principle in Affalterbach. AMG E-Performance is a range of hybrid AMG models with an F1-derived electric system. The F1 heritage in AMG hybrid powertrains (Project ONE) comes with a locked electronic architecture. Full-EV Mercedes keep the inverter and BMS locked, so traditional chip tuning does not apply.

Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. The Mercedes community in Europe has a large pool of available Stage files for the standard models. On Mercedes up to the recent generation, Stage 1 OBD flash is available. The Mercedes premium segment is a high-output platform with Stage 2 potential. High-output Mercedes engines are premium-class with solid headroom for Stage 1. On modern high-output Mercedes, Bench reading is often required because of the encryption.

Frequently asked questions

How much horsepower does Stage 1 add for the Mercedes E 400 Hybrid (3.5i) 306 hp?

Stage 1 for the Mercedes E 400 Hybrid (3.5i) 306 hp adds +24 hp — power increases from 306 to 330 hp (+8%). Torque rises from 370 to 400 Nm (+30 Nm).

What does a Stage 1 remap of the Mercedes E 400 Hybrid (3.5i) 306 hp include?

Stage 1 on the Mercedes E 400 Hybrid (3.5i) 306 hp is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +24 hp with no hardware changes.

What does Stage 1 give on the powerful Mercedes E 400 Hybrid (3.5i) 306 hp?

Stage 1 on the powerful Mercedes E 400 Hybrid (3.5i) 306 hp “lifts” the factory limiters with no hardware changes. The gain is noticeable in the mid and upper range. There is headroom left for moving to Stage 2 (downpipe + intake + intercooler).

How does Stage 2 differ from Stage 1 on the Mercedes E 400 Hybrid (3.5i) 306 hp?

Stage 2 for the Mercedes E 400 Hybrid (3.5i) 306 hp is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.

How many ECU variants does the Mercedes E 400 Hybrid (3.5i) 306 hp have?

The Mercedes E 400 Hybrid (3.5i) 306 hp has 3 ECU variants: Bosch MED17.7.1, Bosch MED17.7.3, Siemens/Continental VGS4-NAG2. Before flashing you need to read the specific unit — calibration is done for the exact hardware/software.

Does Stage 1 void the warranty on the Mercedes E?

Stage 1 on the Mercedes E voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.

How quickly is chip tuning of the Mercedes E 400 Hybrid (3.5i) 306 hp done?

The full remap cycle for the Mercedes E — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.

Can you return to stock after Stage 1 on the Mercedes E?

The original Mercedes E ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.

How much does Stage 1 cost for the Mercedes E 400 Hybrid (3.5i) 306 hp?

The cost of Stage 1 for the Mercedes E 400 Hybrid (3.5i) 306 hp is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.

Last updated: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno