See other engines in this family
Nissan MR16DDT specs: 1.6L (99 ci) 4-cylinder, 79.7 x 81.1 mm (3.1378 x 3.1929 in) bore and stroke, 10.5:1 compression. Rated 188 hp, 2017–2019.
The Nissan MR16DDT is close to square: 3.1378" bore against 3.1929" stroke, within 1.7%, which splits the difference between a high-revving layout and a torque layout. The 3.1929" stroke does not reach 4,000 ft/min of mean piston speed until about 7,500 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 24.8 ci (406 cc).
10.5:1 is in the range that usually runs on pump premium.
3 factory variants share these dimensions, rated at 188 hp across 2017–2019.
| Displacement | 99 ci / 1.6 L |
|---|---|
| Bore | 3.1378" |
| Stroke | 3.1929" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 10.5:1 |
| Bore/stroke ratio | 0.983 |
| Fuel type | gas |
|---|---|
| Redline | 6,400 rpm (factory limit) |
| Advertised HP | 188 hp |
| Years | 2017–2019 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2017 | MR16DDT net | 188 @ 5600 | 177 lb-ft @ 1600 | 10.5:1 |
| 2018 | MR16DDT net | 188 @ 5600 | 177 lb-ft @ 1600 | 10.5:1 |
| 2019 | MR16DDT net | 188 @ 5600 | 177 lb-ft @ 1600 | 10.5:1 |
Factory specification sheet.
| Bore/stroke character | 0.983 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,193 ft/min — conservative for a street engine |
| Displacement per cylinder | 24.8 ci |
| Static compression | 10.5:1 — in the range that usually runs on pump premium |
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 |
|---|---|---|
| 2017 | 188 hp | MR16DDT |
| 2018 | 188 hp | MR16DDT |
| 2019 | 188 hp | MR16DDT |
2 factory vehicles, 2011–2019. Each year opens that model's engine table.