MajorCommonTransmission

Honda Prelude: 4-speed Sport Shift automatic (M6HA) failure

4-speed Sport Shift automatic (M6HA) failure is a common transmission fault on the Honda Prelude on the 1996–2001 cars, and we rate it major. Putting it right costs $2,500 to $5,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 13 documented faults on the Honda Prelude.

Vehicle: Honda Prelude
Engine: 2.2L
Years: 1996–2001
Fuel: petrol
Gearbox: auto
System: Transmission

This page covers the Honda Prelude as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Honda Prelude faults13 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph for this fault yet. We would rather show none than show a picture of something else.

What goes wrong

The 4-speed Sport Shift automatic fitted to the BB6/BB8 Prelude with the 2.2L H22A has the poorest reliability reputation of any Prelude gearbox. Owners across enthusiast forums report harsh or slipping shifts, flaring, and eventual failure, most commonly emerging from roughly 110,000-170,000 km, and many choose a used-box swap or a manual conversion rather than a rebuild because parts and rebuild specialists are scarce. Neglected or overdue automatic transmission fluid changes accelerate the decline. On a 25-year-old imported coupe a healthy auto with documented fluid history is the exception, so treat any auto car cautiously and verify shift quality thoroughly on a proper test drive.

What you would notice

Harsh, jerky or slipping gear changes
Flaring (engine revs rise between shifts)
Delayed engagement when selecting Drive or Reverse
Sport Shift manual mode not responding
Burnt-smelling or dark transmission fluid

How to check it

Where to look. Automatic transaxle, front of engine bay (auto-equipped cars only)

On the test drive check for smooth, prompt up- and down-shifts through all four gears and try the Sport Shift manual mode.
Feel for slip or flare under acceleration and delayed engagement from a stop.
Pull the transmission dipstick to check the fluid is red rather than brown and does not smell burnt, and ask for evidence of regular ATF services.

What it costs to put right

$2,500 to $5,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Is this an automatic or a manual car?”
“When was the transmission fluid last changed and is it in the service records?”
“Have you noticed any slipping, harsh shifts or flaring?”
“Has the gearbox ever been rebuilt or replaced?”

Now check the Honda Prelude you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

Honda-Tech Honda Prelude forum thread 'Prelude 5th gen auto to manual transmission issues & problems'
JDMBUYSELL BB6 Honda Prelude Buyer's Guide (jdmbuysell.com/learn/honda/prelude/bb6)

Honda Prelude buyer questions

Is 4-speed sport shift automatic (m6ha) failure serious on a Honda Prelude?

We rate it major and common on the Honda Prelude. The 4-speed Sport Shift automatic fitted to the BB6/BB8 Prelude with the 2.2L H22A has the poorest reliability reputation of any Prelude gearbox. Owners across enthusiast forums report harsh or slipping shifts, flaring, and eventual failure, most commonly emerging from roughly 110,000-170,000 km, and many choose a used-box swap or a manual conversion rather than a rebuild because parts and rebuild specialists are scarce. Neglected or overdue automatic transmission fluid changes accelerate the decline. On a 25-year-old imported coupe a healthy auto with documented fluid history is the exception, so treat any auto car cautiously and verify shift quality thoroughly on a proper test drive.

How much does it cost to fix on a Honda Prelude?

$2,500 to $5,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Honda Prelude years are affected?

Our research records this fault on the 1996–2001 Honda Prelude. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

On the test drive check for smooth, prompt up- and down-shifts through all four gears and try the Sport Shift manual mode. Feel for slip or flare under acceleration and delayed engagement from a stop. Pull the transmission dipstick to check the fluid is red rather than brown and does not smell burnt, and ask for evidence of regular ATF services. Look here: Automatic transaxle, front of engine bay (auto-equipped cars only)