Honda MHMA 10-Speed Automatic Transaxle · Honda / Acura · Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.
2021–present Honda Accord (1.5T/2.0T), 2022–present Acura MDX Type S, 2022–present Acura TLX Type S
| Configuration | 10-speed automatic FWD/AWD transaxle |
|---|---|
| Gear Ratios | 1st 5.25:1 · 2nd 3.03:1 · 3rd 1.97:1 · 4th 1.43:1 · 5th 1.11:1 · 6th 0.86:1 · 7th 0.71:1 · 8th 0.60:1 · 9th 0.50:1 · 10th 0.39:1 · Rev 4.15:1 |
| Fluid Type | Honda ATF-DW1 |
| Fluid Capacity | 9.4 qts total, 4.5 qts service refill |
2021–2022 MHMA units had shift quality complaints addressed through Honda TCM software updates. Verify all TSBs are applied before authorizing transmission service.
Symptoms: Abrupt downshifts under light braking, gear hunting at highway cruise, hesitation when resuming after coasting
TCC shudder is beginning to emerge on higher-mileage 2021 Accord units — expected given Honda's history with TCC shudder across platforms.
Symptoms: Vibration at 45–65 mph under light throttle, DTC P0740
The top overdrive clutch packs on 10-speed units are lightly loaded but can show premature wear on turbocharged Type S applications.
Symptoms: Slip at highway speed, hunting between 9th and 10th gear
MHMA rebuild replaces all ten-speed clutch packs, torque converter, and all solenoids. TCM software is updated to latest Honda calibration. ATF-DW1 is used. All seals and bearings renewed. This is a complex rebuild requiring Honda-specialized tooling.
Honda ATF-DW1 every 30,000 miles. Check for pending Honda TSBs before any transmission service — the MHMA platform is still relatively new and software updates are ongoing.
2021+ Honda Accord and 2022+ Acura MDX Type S and Acura TLX Type S.
Early data suggests it is — but the platform is young. Most complaints have been resolved through software updates.
A full rebuild ranges $2,400–$3,100 at Chicago Transmission due to the complexity of the 10-speed design.
Likely not — check for Honda TSB updates first. Most early shift quality complaints on the MHMA are resolved through free software recalibration.
Honda ATF-DW1.
Free diagnostic, written estimate, lifetime warranty. Chicago's MHMA rebuild specialists since 1987.
