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When purchasing a HOWO vacuum suction truck, 80% of people will struggle with the choice between "6x4 and 4x2" model — some think the 4x2 is cheaper and more hassle-free, worrying that the 6x4 is a waste; others want to choose the 6x4 in one step, but are afraid of exceeding the budget and not being able to make full use of its advantages. The core issue is "matching your own operational needs." This article provides a comprehensive comparison from key dimensions such as load capacity, power, efficiency, and cost, helping you avoid common purchasing mistakes and accurately select the model that best suits your needs..
★ Load Capacity & Tank Volume: Larger is Not Better—Sufficient Is Best
Many people assume that "a larger tank means more practicality," but this is not the case. For short-distance operations in residential communities, a HOWO 4x2 model sewage vacuum truck with around 10m³ is fully adequate. Choosing a 6x4 model with a 20m³ tank not only incurs a higher purchase cost but also increases fuel consumption and vehicle wear due to empty or half-loaded operation.
Conversely, for large-scale municipal dredging, the small tank of a 4x2 will require more than 10 round trips per day, wasting labor hours. In this case, the large tank of a HOWO 6x4 (16–22m³) can reduce round trips by more than half, greatly improving efficiency.
Below is a comparison of key specifications for several HOWO 4x2 and 6x4 sewage suction truck models.
|
Model |
GVW(T) |
F/R Axle loading(T) |
Wheelbase (mm) |
Engine |
Tank capacity (cbm) |
Vacuum pump |
||
|
Model |
Power(HP) |
Model |
Flow(m³/min) |
|||||
|
4x2 2080 light |
16 |
3.2/8 |
4200 |
YC4E160-33 |
160 |
8 |
Jurop PN106D |
11 |
|
4x2 HW76 |
16 |
7/16 |
4600 |
WP10.300E22 |
300 |
12 |
SK-15 |
15 |
|
6x4 HW76 |
25 |
7/16*2 |
4600+1350 |
WP10.340E22 |
340 |
20 |
Jurop PN155D |
15.17 |
|
6x4 NX |
25 |
9.5/16*2 |
4625+1350 |
WP12.400E32 |
400 |
20 |
2BE-204 |
21 |
|
|
HOWO 4x2 HW76 12cbm sewage tank truck |
|
HOWO HW76 6x4 20cbm vacuum tank truck |
HOWO NX 6x4 20cbm vacuum tank truck |
★ Comparison of HOWO 4X2 and 6x4 sewage suction truck
|
Comparison |
4x2 Sewage Suction Truck |
6x4 Sewage Suction Truck |
Key Purchasing Considerations |
|
Drive Type |
2 axles: front steering axle, rear drive axle) |
3 axles: front steering axle, dual rear drive axles |
More driven axles = stronger load capacity and off-road capability |
|
GVW |
GVW: 4.5–18 tons, limited tank capacity |
GVW: 25 tons; dual rear axles distribute weight for more stable loading |
For heavy sludge and large volume needs, prioritize 6x4 |
|
Tank Capacity |
3–15 m³, typically small tank size |
16–22 m³; larger custom volumes available with anti-slosh baffle design |
Larger single-operation volume → higher efficiency with 6x4 |
|
Power |
116–300 hp, light and medium truck options with wide power selection |
266–420 hp, high torque, ample power reserve |
For climbing, rough roads, and heavy loads, 6x4 is a must |
|
Passability |
Short wheelbase, agile turning; suitable for narrow urban streets and residential areas |
Long wheelbase; dual rear axles give strong climbing, muddy road, and mountain terrain capability; slightly cumbersome on narrow city streets |
For mainly urban use choose 4x2; for outdoor/complex terrain choose 6x4 |
|
Operational Efficiency |
Small per-load capacity, requires frequent round trips; ideal for short-distance, small-scale tasks (e.g., residential septic tanks) |
Large per-load capacity, fewer round trips; paired with Sinotruk high-efficiency vacuum pump for fast suction; suitable for long-distance transport and large-scale sludge cleaning |
For large operating radius, prioritize 6x4; for small operating radius, 4x2 is sufficient |
|
Purchase Cost |
Lower |
Higher; Sinotruk 6x4 costs more than 4x2 due to better chassis, power, and larger tank volume |
If budget is limited and workload small, choose 4x2; for long-term high-frequency heavy loads, 6x4 is more cost-effective |
|
Operate Cost |
Low fuel consumption (15–20 L/100 km), simple maintenance, affordable parts |
Slightly higher fuel consumption (22–28 L/100 km); Sinotruk chassis has extensive maintenance network and easy parts access, keeping long-term costs manageable |
For high-frequency operation, the efficiency advantage of 6x4 can offset the fuel cost |
★
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