An Iranian long-haul operator lives and dies by two numbers that never appear on a brochure cover: how far the truck goes between fuel stops, and how hard the driver works on the long grades between Tehran and the borders. Distance is the whole game here — the network is long, fuel supply is not uniform, and a tractor that cannot carry its own diesel becomes a liability the moment it leaves the refinery ring road. This article covers one vehicle, the Foton Auman EST-A 4×2 tractor listed for Iran, and asks only whether it is built for that distance game.

It is a single-tractor read, not a range walk. Every figure below is from the published specification for this unit. Where the listing omits something a buyer needs — and it omits a couple of important things — this article says so and tells you what to confirm before paying.

1. The engine: 560 PS and a torque curve that suits the distance

The published powerplant is a Foton Cummins X13NS5-560, 12,900 cc, rated at 413 kW / 560 PS at 1,800 rpm, with 2,600 Nm of torque between 1,000 and 1,400 rpm. That is a large-displacement, high-output six-in-line built for sustained motorway work, and the torque plateau sitting low in the rev range is exactly what keeps a loaded semi-trailer moving without constant downshifting. For long-haul logistics the peak number matters less than the fact that 2,600 Nm is available across a 400-rpm band — that is what protects the clutch and the driver on a long pull.

Fuel is delivered by a high-pressure common-rail system with a silicone-oil fan, and the engine is backed by an engine brake plus a hydraulic retarder. On a sustained descent the retarder is worth more than another fifty horsepower, because it keeps the work off the service brakes and off the driver's right foot.

2. The transmission and the 3.083 final drive

Behind the engine sits a ZF 12TX2621TD in an aluminium housing, with the retarder integrated, and actuated as an automatic. A 12-speed automated box on a 560 PS tractor is the right tool: it removes the gear-juggling that wears a driver out on a 1,000 km day. The rear axle is a 13-tonne 485 unit on imported hub units, with a 3.083 final drive and self-adjusting arms, running ABS. The listing shows the 3.083 ratio returning a top speed of 115 km/h, with a 90 km/h speed limiter fitted; it also lists alternative ratios (3.36 and 3.7) that would lower the top speed, so confirm which axle ratio is on the actual unit you are buying if cruise speed matters to your contract.

3. Fuel: the 1,000-litre tank is the real headline

The single most useful number on this truck for Iranian long-haul is the fuel capacity: 850 litres plus 150 litres of aluminium tank, a combined 1,000 litres. On a route where the next reliable diesel is uncertain, that capacity decides whether you carry jerry cans or not. It is the difference between planning a route around fuel and planning a route around cargo. A 4×2 tractor is the lighter, more fuel-efficient tractor layout for line-haul work, and pairing it with a 1,000 L tank is a sensible long-distance specification.

The trade against a 6×4 is traction and kingpin load on steep or poor surfaces; the front axle is rated at 7 tonnes and the design saddle load is 9,540 kg. If your work is pure line-haul on paved road, the 4×2 is the efficient choice. If you frequently leave the pavement, note the limitation and discuss a 6×4 alternative.

4. Cab, brakes and the driver's day

The cab is a high-roof unit on a full-floating airbag suspension with electric tilt — the airbag cab is what keeps a driver sane over long, rough stretches. Inside, the seat is an airbag unit with height adjustment and heating, with an armrest and electric heated mirrors, plus electric windows and central locking. Air conditioning is automatic. Brakes are disc front and rear on a dual-circuit air system, with a spring-energy air-release parking brake. Tyres are 315/80R22.5 18PR mixed tread. The chassis is 6,285 × 2,490 × 3,800 mm on a 3,800 mm wheelbase, and the steering is a BOSCH8098 unit. Stated maximum gradeability is at least 15%.

5. The two gaps you must close before ordering

Two things the listing does not state clearly. First, it gives GVW 45 t but no GCW (gross combination weight) — and for a tractor, GCW is the number that tells you how heavy a semi-trailer you can legally and physically pull. Ask for the rated GCW in writing; the 45 t GVW alone does not describe the job. Second, the listing does not state left- or right-hand drive. Iran drives on the right, so a left-hand-drive unit is what you need, but confirm the steering position explicitly rather than assuming.

The emission standard is published as China Stage V. Do not assume that maps cleanly onto Iranian import requirements; confirm in writing that China Stage V is acceptable for registration where you will plate the truck.

Tractor Truck · Iran

Foton Auman EST-A 4×2 — 560 PS, 1,000 L, ZF AMT + retarder

Foton Cummins X13NS5-560, 12,900 cc · 413 kW / 560 PS @ 1,800 rpm · 2,600 Nm @ 1,000–1,400 rpm · ZF 12TX2621TD aluminium AMT w/ retarder · 13 t rear axle, 3.083 · 850 L + 150 L tanks

Listed at $71,524 · Long-haul line-haul tractor, GVW 45 t

Axle-load law and the road reality in Iran

Iran applies axle-load limits on a Middle Eastern / Mediterranean pattern — a single-axle limit around 13 t, a tandem near 24 t and gross combination weight near 44 t — enforced by the Road Maintenance and Transport Organization. Bandar Abbas is the Gulf gateway, and the freight runs over long, hot distances. The practical catch is that the single-axle limit is generous and the distances are long, but sanctions-era parts access makes durability decisive. The core business is long-haul, oil and transit freight, and a truck that is cheap to buy but expensive to run spends more of its life parked than earning.

For a long-haul rig the margin question is the GCW cap, which leaves little headroom once fuel and a full load are added — a tractor rated well above the legal train limit is mostly academic on Iranian roads.

What Iranian fleets already run

In Iran the reference vehicle is a used Japanese truck — Isuzu, Hino and Mitsubishi Fuso dominate the second-hand market — with European brands in the premium segment, Sinotruk Howo and Shacman as the main Chinese competition, and a large gray-market used fleet in some markets. The used Japanese truck wins on parts density but loses on age and the rebuild cost that lands within a couple of years. The new Chinese truck wins on warranty and a clean bill of health. Foton’s pitch is the middle ground.

6. Pre-order checklist for this Iran tractor

Get the GCW in writing. The listing shows GVW 45 t and no GCW. For a tractor that number defines your legal trailer weight; do not order without it.

Confirm the steering side. The listing does not state LHD or RHD. Iran drives on the right, so confirm left-hand drive explicitly.

Verify the emission acceptance. China Stage V is published; confirm it meets Iranian registration requirements before committing.

Lock the axle ratio. 3.083 is listed with 115 km/h top speed and a 90 km/h limiter, but alternative ratios appear. Specify the ratio you want on the order.

Weigh the 4×2 choice. The 7 t front axle and 9,540 kg saddle load suit paved line-haul; if you leave the pavement often, discuss a 6×4.

This EST-A is listed as a complete vehicle with a named model (BJ4189SLFKA-F8), which keeps per-unit import realistic, and the $71,524 is the published figure — a starting point for enquiry, not a landed cost that includes freight, duties or local compliance work. Start from the GCW and steering-side answers, then negotiate.