Honda Acty: Generations, the Attack Trim and What to Check

The Honda Acty does a few things its rivals don't. Honda mounted the engine between the axles instead of under the seats, gave the 4WD trucks an automatic system, and built a farm-spec Attack trim that US owners hunt for. Here is how the generations line up, which ones you can import, and how to spot a real Attack.

What is the Honda Acty?

The Honda Acty is a two-seat Kei Truck that Honda built from 1977 until April 2021. Its engine sits between the front and rear axles, under the bed, and drives the rear wheels or all four. Honda calls this layout MR, for midship rear-drive, and its brochures point out that it keeps weight on the driven wheels even when the bed is empty.

Like every Kei Truck, the Acty is built to Japan's Kei class, the small-vehicle category that caps engines at 660 cc, and its bed is rated for 350 kg (about 770 lb). The 1990-1999 HA3 and HA4 use the carbureted E07A, a 656 cc three-cylinder rated at 38 PS (metric horsepower, about 37 hp). The 1999 redesign brought the E07Z with Honda's PGM-FI fuel injection, rated at 46 PS on Honda's 2003-2007 specification sheet. The same sheets list a De Dion rear axle and MacPherson struts up front.

Honda never sold the Acty truck under another maker's badge, so there is no twin to search for. The Acty van is a separate model with its own HH chassis codes.

Which Honda Acty generations can you import?

As of October 2026, any Acty manufactured in October 2001 or earlier can enter the US under the 25-year rule, the federal exemption from US safety standards for vehicles at least 25 years old. The date that counts is the month of manufacture, and the 25-year rule guide covers how to confirm it.

Three changes matter when you shop. In March 1990 Honda moved to the 656 cc E07A for Japan's new 660 cc limit, lifting output from 34 PS to 38 PS. The May 1999 redesign brought fuel injection and a larger body under the Kei size rules Japan adopted in October 1998, with the front wheels moved ahead of the seats. Honda then kept the HA6 and HA7 codes until 2009, so a 2000 truck and a 2008 truck share a code. Only the build month separates an HA7 you can import from one that has to wait.

Check your state's rules in the state-by-state Kei Truck laws before you shop. The import steps are in how to import a Kei Truck.

What is the Honda Acty Attack?

The Attack, offered since the second generation arrived in 1988, is Honda's farm-spec 4WD Acty: it adds an ultra-low crawler gear, an ultra-low reverse and a rear differential lock to the 4WD truck.

• 1988-1999 (HA2 and HA4). A dedicated 4-speed manual with an ultra-low (UL) gear and an ultra-low reverse (UR), plus a standard rear diff lock.
• 1999 on (HA7). A 5-speed manual with UL and UR added. Honda's 2003-2007 specification sheet lists the ultra-low gear at 7.800:1 against 4.545:1 for first, and the ultra reverse at 7.588:1 against 4.300:1 for normal reverse. The matching equipment list shows the rear diff lock and a bed work lamp as standard. A second version, the ATTACK-N, joined the range in February 2001.

Everything else is ordinary 4WD Acty: the same engine, the same power and the same real-time 4WD. The Attack is a gearing and traction package. The UL gear lets a loaded truck creep up a steep, slick slope without slipping the clutch, UR backs it down under control, and the diff lock keeps both rear wheels pulling when one loses grip.

Honda also built the HA5 Acty Crawler from 1994 to 1999, sold to special order: an Attack with rubber tracks in place of the rear wheels.

How to identify a real Acty Attack

• Look at the shifter. The shift pattern shows UL and UR positions. A standard 4WD Acty does not have them.
• Find the diff lock control in the cab and test it on a loose surface.
• Check the chassis code. The Attack was 4WD only, so the code must be HA2, HA4 or HA7 (HA9 on later trucks).
• Read the grade. "ATTACK" appears in the grade field of auction sheets and Japanese listings.
• Look for the bed work lamp on later HA7 trucks, where Honda fitted it as standard.

A tailgate decal proves nothing, since anyone can add one. The ultra-low gearbox is the part that cannot be faked cheaply.

Do you need one? If you work steep ground with a load, the Attack earns its keep. On flat ground, a regular 4WD Acty does the same jobs. The off-road guide covers low-gear driving and traction in general.

What should you check before buying a Honda Acty?

Check the chassis code and build month first: every HA3 and HA4 qualifies, but an HA7 qualifies only if it was built in October 2001 or earlier. Then inspect the truck:

• Real-time 4WD. Drive slow, tight circles on pavement and on gravel. Clunks, shudder or binding on dry pavement need a closer look. Make sure all four tires match in size and wear, because mismatched tires keep an automatic 4WD system working all the time.
• Attack equipment. If the truck is sold as an Attack, engage UL, UR and the diff lock on the test drive.
• The engine under the bed. Look at it from underneath with a light. Oil leaks, exhaust leaks and tired engine mounts are easy to miss from above. Ask for a dated timing belt record.
• CV boots, front and rear. With a De Dion rear, the differential rides with the engine and short shafts with CV joints drive the rear wheels, so check the rear boots on 2WD trucks too.
• Gearbox. Grinding into second or third points to worn synchros on hard-worked trucks.
• Carburetor on HA3 and HA4 trucks. Watch for hard cold starts and an unsteady idle.
• Rust. Check the frame rails, the bed floor and its supports, the cab corners and the rocker panels.

Read the auction sheet guide before you bid, and use the Kei Truck buying guide for a full inspection list.

What are common Honda Acty problems?

At 25-plus years, most Acty trouble comes from belts, rubber and rust rather than the design, which ages well.

Timing belt

The E07A and E07Z both drive the camshaft with a rubber belt. Honda advertised a long-life belt on later trucks, but a belt that has been in place for 20-plus years is due whatever the mileage. A common rule of thumb is 100,000 km (about 62,000 miles) or 10 years. Replace the tensioner and seals at the same time.

Carburetor and ignition on HA3 and HA4

A carbureted E07A that sat for months starts hard and idles rough. Clean or rebuild it with Kei Truck carburetor parts, and refresh the plugs, wires, cap and rotor while you are there.

4WD and tires

Mismatched tire sizes, or one new tire with three worn ones, make the real-time 4WD work constantly. Replace tires in sets of four on 4WD trucks.

CV boots

Torn boots are a common find on Actys of every type. Replacing a CV boot early is cheap. A joint that has run dry and gritty is not.

Rust

Rust under the bed and along the frame rails ends more Actys than any mechanical fault. Wash the underside after salted roads, and keep drain paths in the bed clear. Service intervals are in the maintenance guide.

Where do you get Honda Acty parts?

Order Acty parts by chassis code (HA4, HA7 and so on). An HA4 and an HA7 share the midship layout, but the engine, body, brakes and many suspension parts changed with the 1999 redesign.

Oiwa Garage, the parts store that publishes this guide, sorts Acty parts by chassis:

• HA3 and HA4 parts for 1990-1999 trucks
• HA6 and HA7 parts for 1999-2009 trucks
• HA8 and HA9 parts for 2009-2021 trucks

Attack owners shop the same lists as any 4WD Acty with the same code. For the first service on a newly imported truck, plan on oil and filter, air and fuel filters, spark plugs, coolant, gear oil and the timing belt.

How does the Acty compare with other Kei Trucks?

The midship engine is the Acty's main difference. The Suzuki Carry, Daihatsu Hijet and Mitsubishi Minicab put the engine under the seats, and the Subaru Sambar puts a four-cylinder at the back. The Acty's 4WD also engages itself, where most rivals use a part-time system the driver selects.

Pick an Acty if you want the engine out from under the seats and 4WD that looks after itself, or hunt down an Attack for steep, loaded work. The Kei Truck model comparison covers all five.