Mercedes-Benz Trucks Actros 1855 551hp euro4+5 Remap

Name: Mercedes-Benz Trucks Actros 1855 551hp euro4+5 ECU Remap
Brand: Mercedes-Benz Trucks

Expected gains of +49 BHP and +300 Nm torque

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BHP+49 hp (9%)

Standard

551 hp

Tuned

600 hp

Torque+300 Nm (12%)

Standard

2600 Nm

Tuned

2900 Nm

Suitability

Moderate (4.5/10)

Gains Profile

Balanced

Headroom

Medium

Mercedes-Benz Trucks Actros 1855 551hp euro4+5 ECU Remapping

Considering an ECU remap for your Mercedes-Benz Trucks Actros 1855 551hp euro4+5? A Stage 1 remap can take this Actros 18 diesel engine from 551 BHP to 600 BHP and from 2600 Nm to 2900 Nm of torque (naturally aspirated). This engine scores 4.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz Trucks Actros can achieve.

How this engine compares

56thof 71 Mercedes-Benz Trucks Actros engines by power gain
75%of the 9,842 engines we hold gain data for see a smaller power increase
97%of engines with torque data see a smaller torque increase

Comparisons are calculated from our own recorded Stage 1 figures.

Assessment

The Mercedes-Benz Trucks Actros 1855 551hp euro4+5 is a naturally aspirated unknown fuel type engine producing 551 BHP and 2600 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 600 BHP and 2900 Nm — a gain of around 49 BHP (9%) and 300 Nm (12%).

This engine has limited 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.

Other Actros Actros 18 Engines

Engine	BHP	Gain	Torque	Gain	Score
1831 313hp euro3	313 → 343	+30	1530 → 1800	+270	Moderate (4.5/10)
1832 320hp euro3+4+5	320 → 351	+31	1650 → 1900	+250	Moderate (4.5/10)
1835 354hp euro3	354 → 385	+31	1730 → 1950	+220	Moderate (4.5/10)
1836 360hp euro3+4+5	360 → 394	+34	1850 → 2050	+200	Moderate (4.5/10)
1840 394hp euro3	394 → 431	+37	1850 → 2100	+250	Moderate (4.5/10)
1841 408hp euro3+4+5	408 → 446	+38	2000 → 2270	+270	Moderate (4.5/10)
1843 428hp euro3	428 → 467	+39	2000 → 2300	+300	Moderate (4.5/10)
1844 435hp euro3+4+5	435 → 475	+40	2100 → 2350	+250	Moderate (4.5/10)
1845 449hp euro3+4+5	449 → 513	+64	2200 → 2512	+312	Good (6.5/10)
1846 456hp euro3+4+5	456 → 497	+41	2200 → 2450	+250	Moderate (4.5/10)
1848 476hp euro3+4+5	476 → 519	+43	2300 → 2700	+400	Moderate (4.5/10)
1850 503hp euro3	503 → 548	+45	2400 → 2800	+400	Moderate (4.5/10)
1851 510hp euro4+5	510 → 556	+46	2400 → 2800	+400	Moderate (4.5/10)
1853 530hp euro3	530 → 577	+47	2400 → 2770	+370	Moderate (4.5/10)
1854 537hp euro3	537 → 577	+40	2400 → 2770	+370	Moderate (4.5/10)
1857 571hp euro3	571 → 622	+51	2700 → 3000	+300	Good (6.5/10)
1858 578hp euro3	578 → 629	+51	2700 → 3000	+300	Moderate (5.5/10)
1860 598hp euro4+5	598 → 629	+31	2800 → 3100	+300	Limited (3.5/10)

Technical Specifications

Fuel Type: Diesel
Aspiration: Naturally Aspirated
Type: Commercial
Engine Family: Mercedes-benz Trucks NA Petrol

ECU & Transmission

Likely ECU Low confidence: Petrol ECU (varies by market/year)
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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MakeMercedes-Benz Trucks

ModelActros

GenerationActros 18

Engine1855 551hp euro4+5

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.