Bore, stroke, displacement and compression for all 13 Mazda Skyactiv-G engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 91.3–201.4 ci |
|---|---|
| Cylinders | 4, 6 |
| Bore | 2.933–3.504" |
| Stroke | 3.378–3.937" |
| Compression | 10.5–13.0:1 |
| Advertised power | 118–280 hp |
| Years | 2016–2026 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 33 I6 | 201.4 ci | 3.3858" × 3.7087" | 12:1 | 280 |
| T3-VPTS | 200.3 ci | 3.3858" × 3.7087" | 12:1 | 280 |
| PY-VPS | 152.5 ci | 3.5039" × 3.937" | 13:1 | 187 |
| PY-VPTS | 152.5 ci | 3.5039" × 3.937" | 10.5:1 | 250 |
| PY-VPTS | 152 ci | 3.5039" × 3.937" | 10.5:1 | 250 |
| Skyactiv-G · 3.504" × 3.937" · 13:1 | 152 ci | 3.5039" × 3.937" | 13:1 | 181–187 |
| Skyactiv-G · 3.504" × 3.937" · 13:1 | 151.8 ci | 3.5039" × 3.937" | 13:1 | 181–187 |
| PY-VPTS | 151.8 ci | 3.5039" × 3.937" | 10.5:1 | 250 |
| PE-VPS | 122 ci | 3.2874" × 3.5906" | 13:1 | 155 |
| PE-VPS | 122 ci | 3.2874" × 3.5906" | — | 155–181 |
| Skyactiv-G · 3.287" × 3.591" · 13:1 | 121.9 ci | 3.2874" × 3.5906" | 13:1 | 155–181 |
| P5-VPS | 91.5 ci | 2.9331" × 3.378" | 13:1 | 118 |
| 15 I4 | 91.3 ci | 2.9331" × 3.378" | 13:1 | 131 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
Compression spans 10.5:1 to 13:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
All are undersquare — stroke larger than bore, favouring torque low in the range.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.