The Honda M4JA 8-speed automatic transmission has been assembled at the plant in Japan since 2015 and is installed in the restyled version of the Acura ILX sedan with a 2.4-liter K24V7 engine. This automatic transmission features an unusual combination of a torque converter and a dual-clutch system.
8DCT family: MDSA, M4JA.
Specifications
| Type | automatic transmission + DCT |
| Number of gears | 8 |
| Type of drive | front |
| Engine volume, l | up to 2.4 |
| Torque output, Nm | up to 240 |
| Recommended oil | Acura ATF-TYPE 2.0 |
| Oil capacity, liter | 4.1 |
| Replacing the oil | every 60 000 km |
| Replacing the filter | every 60 000 km |
| Gearbox lifespan, km | ~270 000 km |
Gear ratios Honda M4JA
Using the 2017 Acura ILX with a 2.4-liter engine as an example:
| Main | 3.94 |
| 1st | 3.08 |
| 2nd | 2.18 |
| 3rd | 1.61 |
| 4th | 1.22 |
| 5th | 0.96 |
| 6th | 0.74 |
| 7th | 0.62 |
| 8th | 0.48 |
| Reverse | 2.22 |
Using
The transmission was installed on:
- Acura ILX 1 (DE1) in 2015 – …
Disadvantages of the Honda M4JA gearbox
- On specialized forums, people complain about jerky shifting, but firmware updates help;
- Change the dual clutch clutches when they reach 50% wear, or they will quickly burn out;
- The tiny heat exchanger often gets clogged with dirt, which can lead to overheating of the automatic transmission;
