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Nissan MR20DD specs: 2.0L (122 ci) 4-cylinder, 84 x 90.1 mm (3.3071 x 3.5472 in) bore and stroke. Rated 141-176 hp, 2017–2026. Used in the Nissan Rogue.
The Nissan MR20DD is undersquare — the 3.5472" stroke exceeds the 3.3071" bore by 6.8% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5472" stroke puts mean piston speed at 4,000 ft/min around 6,750 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 30.5 ci (500 cc).
It is one of 6 engines in the Nissan 122ci family, all of them 122 ci — the differences between them are in compression, heads and rating, not displacement. 16 factory variants share these dimensions, rated from 141 to 176 hp across 2017–2026.
| Displacement | 122 ci / 2 L |
|---|---|
| Bore | 3.3071" |
| Stroke | 3.5472" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 10.6–11.2:1 (published figures vary) |
| Bore/stroke ratio | 0.932 |
| Fuel type | gas |
|---|---|
| Advertised HP | 141–176 hp |
| Years | 2017–2026 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2017 | MR20DD net | 141 @ 6000 | 147 lb-ft @ 4400 | 11.2:1 |
| 2018 | MR20DD net | 141 @ 6000 | 147 lb-ft @ 4400 | 11.2:1 |
| 2019 | MR20DD net | 141 @ 6000 | 147 lb-ft @ 4400 | 11.2:1 |
| 2020 | MR20DD net | 141 @ 6000 | 147 lb-ft @ 4400 | 11.2:1 |
| 2020 | MR20DD net | 149 @ 6400 | 146 lb-ft @ 4400 | 10.6:1 |
| 2021 | MR20DD net | 141 @ 6000 | 147 lb-ft @ 4400 | 11.2:1 |
| 2021 | MR20DD net | 149 @ 6400 | 146 lb-ft @ 4400 | 10.6:1 |
| 2022 | MR20DD net | 141 @ 6000 | 147 lb-ft @ 4400 | 11.2:1 |
| 2022 | MR20DD net | 149 @ 6000 | 146 lb-ft @ 4000 | 10.6:1 |
| 2023 | MR20DD net | 149 @ 6000 | 146 lb-ft @ 4000 | 10.6:1 |
| 2024 | MR20DD net | 149 @ 6000 | 146 lb-ft @ 4000 | 10.6:1 |
| 2025 | MR20DD net | 149 @ 6000 | 146 lb-ft @ 4000 | 10.6:1 |
| 2026 | MR20DD net | 149 @ 6000 | 146 lb-ft @ 4000 | 10.6:1 |
Factory specification sheet.
| Bore/stroke character | 0.932 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,547 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.5 ci |
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 | 141 hp | MR20DD |
| 2017 | 176 hp | MR20DD |
| 2018 | 141 hp | MR20DD |
| 2018 | 176 hp | MR20DD |
| 2019 | 141 hp | MR20DD |
| 2019 | 176 hp | MR20DD |
| 2020 | 141 hp | MR20DD |
| 2020 | 149 hp | MR20DD |
| 2021 | 141 hp | MR20DD |
| 2021 | 149 hp | MR20DD |
| 2022 | 141 hp | MR20DD |
| 2022 | 149 hp | MR20DD |
| 2023 | 149 hp | MR20DD |
| 2024 | 149 hp | MR20DD |
| 2025 | 149 hp | MR20DD |
| 2026 | 149 hp | MR20DD |
2 factory vehicles, 2017–2026. Each year opens that model's engine table.