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Toyota 2AR-FE specs: 2.5L (152 ci) 4-cylinder, 90 x 98 mm (3.5433 x 3.8583 in) bore and stroke, 10.4:1 compression. Rated 169-180 hp, 2009–2018.
The Toyota 2AR-FE is undersquare — the 3.8583" stroke exceeds the 3.5433" bore by 8.2% — a layout that trades peak RPM for leverage and torque low in the range. The 3.8583" stroke puts mean piston speed at 4,000 ft/min around 6,200 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 38.0 ci (623 cc).
10.4:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 4 engines in the Toyota 152ci family, all of them 152 ci — the differences between them are in compression, heads and rating, not displacement. 24 factory variants share these dimensions, rated from 169 to 180 hp across 2009–2018.
| Displacement | 152 ci / 2.5 L |
|---|---|
| Bore | 3.5433" |
| Stroke | 3.8583" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 10.4:1 |
| Bore/stroke ratio | 0.918 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 169–180 hp |
| Years | 2009–2018 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2009 | 2AR-FE net | 179 @ 6000 | 172 lb-ft @ 4000 | — |
| 2010 | 2AR-FE net | 179 @ 6000 | 172 lb-ft @ 4000 | — |
| 2011 | 2AR-FE net | 169 @ 6000 | 167 lb-ft @ 4100 | — |
| 2011 | 2AR-FE net | 179 @ 6000 | 172 lb-ft @ 4000 | — |
| 2011 | 2AR-FE net | 180 @ 6000 | 173 lb-ft @ 4100 | 10.4:1 |
| 2012 | 2AR-FE net | 178 @ 6000 | 170 lb-ft @ 4100 | — |
| 2012 | 2AR-FE net | 179 @ 6000 | 172 lb-ft @ 4000 | — |
| 2012 | 2AR-FE net | 180 @ 6000 | 173 lb-ft @ 4100 | 10.4:1 |
| 2013 | 2AR-FE net | 176 @ 6000 | 172 lb-ft @ 4100 | — |
| 2013 | 2AR-FE net | 178 @ 6000 | 170 lb-ft @ 4100 | — |
| 2013 | 2AR-FE net | 180 @ 6000 | 173 lb-ft @ 4100 | 10.4:1 |
| 2014 | 2AR-FE net | 176 @ 6000 | 172 lb-ft @ 4100 | — |
| 2014 | 2AR-FE net | 178 @ 6000 | 170 lb-ft @ 4100 | — |
| 2014 | 2AR-FE net | 179 @ 6000 | 172 lb-ft @ 4100 | 10.4:1 |
| 2015 | 2AR-FE net | 176 @ 6000 | 172 lb-ft @ 4100 | — |
| 2015 | 2AR-FE net | 178 @ 6000 | 170 lb-ft @ 4100 | — |
| 2016 | 2AR-FE net | 176 @ 6000 | 172 lb-ft @ 4100 | — |
| 2016 | 2AR-FE net | 178 @ 6000 | 170 lb-ft @ 4100 | — |
| 2017 | 2AR-FE net | 176 @ 6000 | 172 lb-ft @ 4100 | — |
| 2017 | 2AR-FE net | 178 @ 6000 | 170 lb-ft @ 4100 | — |
| 2018 | 2AR-FE net | 176 @ 6000 | 172 lb-ft @ 4100 | — |
Factory specification sheet.
| Bore/stroke character | 0.918 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,858 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 38.0 ci |
| Static compression | 10.4:1 — 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 |
|---|---|---|
| 2009 | 179 hp | 2AR-FE |
| 2010 | 169 hp | 2AR-FE |
| 2010 | 179 hp | 2AR-FE |
| 2011 | 169 hp | 2AR-FE |
| 2011 | 179 hp | 2AR-FE |
| 2011 | 180 hp | 2AR-FE |
| 2012 | 178 hp | 2AR-FE |
| 2012 | 179 hp | 2AR-FE |
| 2012 | 180 hp | 2AR-FE |
| 2013 | 176 hp | 2AR-FE |
| 2013 | 178 hp | 2AR-FE |
| 2013 | 180 hp | 2AR-FE |
| 2014 | 176 hp | 2AR-FE |
| 2014 | 178 hp | 2AR-FE |
| 2014 | 179 hp | 2AR-FE |
| 2015 | — | 2AR-FE |
| 2015 | 176 hp | 2AR-FE |
| 2015 | 178 hp | 2AR-FE |
| 2016 | — | 2AR-FE |
| 2016 | 176 hp | 2AR-FE |
| 2016 | 178 hp | 2AR-FE |
| 2017 | 176 hp | 2AR-FE |
| 2017 | 178 hp | 2AR-FE |
| 2018 | 176 hp | 2AR-FE |
3 factory vehicles, 2009–2018. Each year opens that model's engine table.