A 10 m³ concrete mixer truck is rated at approximately 40 L/100 km, so its fuel consumption per cubic metre delivered depends directly on the loaded delivery distance [S1].
Typical published truck data covers drum ratings from 6 to 12 m³, while normal-weight concrete weighs about 2.4 tonnes per cubic metre before the chassis, drum, and water tank are added [S1][S5].
Published fuel-use benchmarks by drum capacity
Published HOWO figures give average fuel consumption of approximately 33 L/100 km for a 6 m³ truck, 37 L/100 km for an 8 m³ truck, 40 L/100 km for a 10 m³ truck, and 41 L/100 km for a 12 m³ truck [S1]. These values are model-level operating benchmarks, not guaranteed consumption for every route or duty cycle.
The capacity figures are geometric rather than rated mixing capacities in the broader market data. Common nominal truck sizes span 6–10 cubic yards, or 4.6–7.6 m³, for standard vehicles, while larger trucks reach 10–12 cubic yards, or 7.6–9.2 m³ [S2].
For a basic planning calculation, divide distance in kilometres by 100, multiply by the stated litres per 100 kilometres, then divide by the cubic metres actually delivered. At the published 10 m³ benchmark of 40 L/100 km, a 20 km round trip would use about 8.0 L, or 0.80 L/m³ for a full 10 m³ load. A partial 8 m³ load on the same route would use about 1.00 L/m³, before adding an allowance for waiting, drum cleaning, and traffic.
How to calculate litres per cubic metre
The correct denominator is the usable volume delivered, not the drum's geometric volume or its marketing size. A drum rated at 10 cubic yards can have physical space of approximately 14 cubic yards, with the difference providing reserve mixing space rather than additional deliverable concrete [S2].
The calculation is straightforward: litres per 100 km multiplied by trip kilometres and divided by 100 gives trip fuel, and trip fuel divided by delivered cubic metres gives litres per cubic metre. For a 12 m³ truck travelling 30 km at 41 L/100 km, theoretical trip consumption is 12.3 L, which equals 1.03 L/m³ if the full rated load is delivered [S1].
Route calculation should include the distance from the plant to the site, the return distance, and any deadhead or queue movement. The 2022 NRMCA fleet survey reported a national average of 2.9 miles per cubic yard, calculated by dividing average truck miles by average total cubic yards delivered per truck [S3]. That benchmark illustrates why delivery density affects the fuel result: longer average hauls spread fixed route costs over more concrete, while short, lightly loaded trips worsen litres per cubic metre [S3].
Capacity, payload, and legal load constraints
Normal-weight concrete has a mass of approximately 2,400 kg per cubic metre, so an 8 m³ load represents 19.2 tonnes of concrete alone [S5]. A 10–12 m³ truck carries 24–28.8 tonnes of concrete at that density, before adding the mixer body, water tank, chassis, and other tare [S5].
Rated capacity classes in the selection data are 3–4 m³ for narrow sites, 6 m³ for weight-restricted urban work, 8–9 m³ for mainstream fleets, and 10–12 m³ for large pours and high-volume plants [S5]. These classes also affect vehicle configuration: 8–9 m³ loads are associated with 6x4 heavy-duty chassis, while 10–12 m³ loads commonly use 8x4 four-axle chassis [S5].
Payload and axle limits can therefore override drum capacity. A 6x4 truck carrying an 8 m³ load typically has a gross vehicle weight of 31–33 tonnes, while many markets cap three-axle rigid vehicles at 26–32 tonnes [S5]. For fleet planning, the concrete mixer truck selection should be checked against axle limits, drum rating, and delivery route before fuel is treated as a comparable purchasing metric.
Loaded and empty operation changes the benchmark
One delivery study separates empty-truck fuel efficiency of 3.3 miles per gallon from loaded-truck efficiency of 2.8 miles per gallon [S4]. The loaded value is 15.2% lower than the empty value, calculated as (3.3 minus 2.8) divided by 3.3, so a fuel model based only on empty-road consumption will understate the real operating burden.
Engine size, load weight, road conditions, congestion, acceleration, maintenance, and tyre pressure all influence the result [S1]. A truck that repeatedly operates at 40 L/100 km with a 10 m³ load uses less fuel per cubic metre than the same truck carrying 5 m³ over the same distance, because the distance and engine operating time are divided across fewer cubic metres.
For a practical benchmark, an 8 m³ truck at 37 L/100 km over 25 km consumes about 9.25 L, or 1.16 L/m³. The same truck on a 50 km round trip consumes about 18.5 L, or 2.31 L/m³. These are route-normalised planning values, not a promise that a particular vehicle will achieve the stated figure [S1].
Transit mixers, self-loading mixers, and small deliveries
Self-loading mixers can achieve better fuel economy per cubic metre when operating shorter distances with smaller engines, while a transit mixer is better suited to moving larger, plant-batched loads over longer routes [S6]. Small trucks rated at 3–4 m³ carry approximately 7.2–9.6 tonnes of normal-weight concrete and suit narrow urban streets, small pours, and remote sites [S5].
The comparison is not simply fuel consumption per 100 kilometres. It is fuel consumption per cubic metre delivered, including partial-load utilisation. A smaller truck may burn less fuel per kilometre but still consume more litres per cubic metre if its drum is only partly filled. The relevant delivery options are therefore: compact 3–4 m³ vehicles for access and small pours, 8–9 m³ transit mixers for mainstream fleet work, and 10–12 m³ trucks for large pours where axle capacity and road access permit [S5].
For a controlled comparison, a self-loading mixer with a smaller engine and short-haul duty cycle should be compared with a transit mixer on litres per cubic metre, loaded-trip speed, waiting time, and return-to-plant utilisation. The broader self-loading mixer truck comparison covers the specification trade-offs that determine which option fits a delivery route.
Planning data, load discipline, and operating records
Fuel per cubic metre is a fleet measurement, not a catalogue specification alone. The NRMCA survey describes fleet operating statistics as a method for quantifying performance and planning budgets, with benchmarking used to compare cost and operational factors against industry averages [S3]. For delivery planning, record the odometer at departure and return, litres purchased, delivered cubic metres, and waiting time for each trip.
Capacity is only one part of the calculation. Standard trucks commonly hold 8–10 cubic yards, while a fully loaded truck has been described as exerting 66,000 pounds on the ground, with 28,000 pounds on each rear axle; an empty truck weighs 27,000 pounds in that delivery example [S4]. Normal-weight concrete at 2,400 kg/m³ provides a defensible basis for checking whether the truck is carrying more than the chassis and legal load limits allow [S5].
Overloading increases fuel use and creates mechanical and safety risks, while maintenance checks on the engine, transmission, hydraulic system, and tyres can reduce avoidable consumption [S1]. Plant dispatchers should also avoid treating a nominal 10 m³ load as a guaranteed 10 m³ of saleable concrete, because rated capacity and usable volume are not the same measurement [S2].
A defensible tracking baseline is litres per cubic metre, calculated from refuelled litres divided by paid cubic metres, with trip distance and loaded percentage reported separately; for example, a 10 m³ truck at 40 L/100 km over 20 km establishes a 0.80 L/m³ planning figure before operational allowances [S1].