Mercedes-AMG A45 W176 / W177Modification Guide
AMG A45 Performance Guide
M133 and M139 — the two most powerful production four-cylinders ever sold, and the very different build paths they demand.
VCTR Editorial10 min read
Mercedes-AMG A45 W176 / W177The A45's M133 and M139 are very different engines. Your build path needs to know which one is in front of you.
M133 (W176)
The original 2.0 hand-built four. Tuning is mature — Stage 1 gains are clean and meaningful.
M139 (W177)
Flat-turbo, longitudinal cooling layout, MUCH more headroom. The chassis can hold a lot more than M-B will sell you.
End of article · Modification Guide← Back to Build Guides
Curated for this platformMercedes-AMG A45 W176 / W177
Hand-selected hardware that fits the chassis discussed in this article. Confirmed against generation, engine code and regional spec.
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