Iseki GEAS AT23-AT33 buying guide: which one suits you?
The Iseki GEAS AT series is a compact Japanese tractor line that you'll mainly come across in Europe as a grey import: bought directly from Japan, with a Japanese nameplate and a manual you'll rarely find in English. Still, it's a practical series for anyone looking for a robust, agile tractor for the yard, a hobby farm, or small-scale agriculture. In this buying guide, we'll walk through the entire lineup: from the compact AT23 to the heaviest AT33, including the narrow-track variants AT27N and AT33N.
Suitable for the entire series: Iseki GEAS AT23, AT25, AT27, AT30, AT33, and the narrow-track versions AT27N and AT33N.
The AT series in brief
All models in the AT series share the same platform: a water-cooled 3-cylinder E3CD diesel engine of 1,498 cc, four-wheel drive, wet disc brakes, and power steering. Add to that Iseki's signature AT-shift — a powershift-like gearbox with 16 gears plus 4 range settings, operated with a push button instead of a clutch pedal at every shift. The difference between the AT23 and AT33, then, isn't a different engine block, but the tuning of the injection pump/governor and engine speed: the 23 to 27 hp versions run at 2500 rpm, while the 30 and 33 hp versions run at 2800 rpm. That's good news for you as an owner: many parts (filters, gaskets, valves, injectors) are identical across the entire range, which makes maintenance a lot simpler than with series that use multiple engine blocks.
AT23 through AT33 at a glance
| Model | Power | Length | Weight (with cab) | Rear tyre size |
|---|---|---|---|---|
| AT23 | 23 hp (16.9 kW) @ 2500 rpm | 3010 mm | 1280 kg (1395 kg) | 9.5-24 |
| AT25 | 25 hp (18.4 kW) @ 2500 rpm | 3010 mm | 1305 kg (1420 kg) | 11.2-24 |
| AT27 | 27 hp (19.9 kW) @ 2500 rpm | 3010 mm | 1330 kg (1445 kg) | 12.4-24 |
| AT30 | 30 hp (22.1 kW) @ 2800 rpm | 3090 mm | 1360 kg (1475 kg) | 12.4-26 |
| AT33 | 33 hp (24.3 kW) @ 2800 rpm | 3090 mm | 1385 kg (1500 kg) | 13.6-24 |
Rule of thumb: choose the AT23 or AT25 for light work on a yard or small plot (mowing, light tillage, transport), the AT27 as an all-round mid-range option for mixed use, and the AT30 or AT33 if you're tackling heavier tillage work, a front loader, or larger implements. In terms of maneuverability, the models barely differ from each other — the minimum turning circle is 2.0 metres across the entire range.
The narrow-track variants: AT27N and AT33N
Alongside the standard series, there are two narrow-track versions: the AT27N and AT33N. They share the engine and power output with their standard counterparts (27 and 33 hp respectively), but are considerably narrower (1275-1325 mm instead of 1365-1455 mm) and lower (starting from 1880 mm). Thanks to the shorter wheelbase of 1645 mm, they're also extra maneuverable in tight spaces — exactly what you want when working between rows, such as in orchards and fruit farming.
Strengths and weaknesses in practice
The AT series is known as a reliable workhorse. The shared E3CD engine block is proven and is also used in other Iseki series (TG, TK, TH), which means filters, injectors, and cylinder heads are relatively easy to source — including through Shop4trac. Owners also often find the AT-shift transmission more comfortable than a traditional clutch-based gearbox.
The downside of grey imports applies here too. Official Iseki dealers in Europe typically don't cover unofficially imported models under warranty, manuals are almost always available only in Japanese, and some tractors enter the country without a complete maintenance history. Also watch out for corrosion on the chassis, brake lines, and exhaust manifold, and check whether the hour meter reading is plausible given the tractor's condition.
Used prices: what to expect
Solid, traceable pricing data is limited for this niche series — many sellers work with "price on request" and Japanese auction houses often only show prices after registration. So treat the ranges below as an indication, not a guarantee.
| Model | Indicative price range (EUR, delivered in EU) |
|---|---|
| AT23 | €5,000 – €9,000 (indicative, comparable class) |
| AT25 | €8,000 – €10,500 (multiple independent listings, most reliable range) |
| AT27 | €8,000 – €13,000 (indicative, comparable class) |
| AT30 | €6,000 – €16,000 (wide spread, highly condition-dependent) |
| AT33 | €9,000 – €15,000 (indicative, comparable class) |
| AT27N / AT33N | €7,000 – €14,000 (indicative, comparable class, no narrow-track-specific data found) |
The biggest price-determining factors are operating hours, the presence or absence of a cab, year of manufacture, whether or not it has a front loader, and visible corrosion. An AT with a cab and fewer than 1,500 operating hours is usually at the higher end of the range; a version with an open safety frame and more hours sits at the lower end.
What to watch out for when buying
Especially with a recent import, ask for the original Japanese export report (auction sheet) with condition score; it often tells you more than a set of photos. Check the chassis, brake lines, and exhaust for rust, inspect the front axle's lubrication points, and test the differential lock and the AT-shift gear change during a test drive. Finally, ask whether filters, gaskets, and injectors for the E3CD engine are available — for the AT series this is generally well arranged, partly thanks to the shared engine block with other Iseki series.
