See other engines in this family
Lexus M20A-FXE specs: 2.0L (121.9 ci) 4-cylinder, 80.5 x 97.6 mm (3.1693 x 3.8425 in) bore and stroke, 14:1 compression. Rated 143-146 hp. DOHC.
The Lexus M20A-FXE is undersquare — the 3.8425" stroke exceeds the 3.1693" bore by 17.5% — a layout that trades peak RPM for leverage and torque low in the range. The 3.8425" stroke puts mean piston speed at 4,000 ft/min around 6,250 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 30.5 ci (499 cc).
14:1 on aluminum heads is high for a production gasoline engine; running a ratio like that on pump fuel depends on chamber design and fuel delivery rather than the number alone.
It is one of 15 engines in the Dynamic Force family, the smallest at 121.9 ci. 2 factory variants share these dimensions, rated from 143 to 146 hp. Factory fitments include the Lexus UX 250h, Toyota Corolla Hybrid.
| Displacement | 121.9 ci / 2 L |
|---|---|
| Bore | 3.1693" |
| Stroke | 3.8425" |
| Cylinders | 4 |
| Compression ratio | 14:1 |
| Bore/stroke ratio | 0.825 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 143–146 hp |
| Bore/stroke character | 0.825 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,843 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.5 ci |
| Static compression | 14:1 — high enough that pump premium or better is normally required |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| — | 143 hp | M20A-FXE |
| — | 146 hp | M20A-FXE |