The modern diesel engine has not disappeared.
It has been reinvented for those who use it correctly.
In public discourse, diesel often seems like a technology of the past. Electrification dominates the conversation, and rightly so: in many applications, electric is the logical choice today.
But anyone who takes a closer look at the technology will see that the modern diesel engine is fundamentally different from its predecessors.
Under the European Stage V emissions standard, diesel has evolved into a high-tech power source, designed for maximum efficiency and minimal local emissions.
So the question is not whether diesel still exists.
The question is: where is it being used correctly today?
What has changed technically?
Anyone who talks about diesel today as if nothing has changed is missing an essential point: the technology has fundamentally evolved.
At the heart of this is the diesel particulate filter (DPF) .
The DPF captures particulate matter that was previously emitted directly. To burn these captured soot particles, the engine must reach a sufficiently high exhaust temperature. This process is called regeneration.
And that is the tipping point.
A modern Stage V engine is designed to operate under load. When primarily performing light tasks, making short trips, or idling for extended periods, it doesn't reach the required operating temperature. Regeneration remains incomplete, resulting in soot buildup and increased maintenance pressure.
Therefore, one simple rule applies:
🔎 The Golden Rule of Stage V
A Stage V engine is an athlete, not an office worker.
He must sweat to stay healthy.
These engines are not problem technology.
They are application technology.
If you use them for what they were designed for—heavy, continuous work—they'll perform efficiently and cleanly. If you use them for light, intermittent use, you're working against their design.
Where does diesel make sense today?
The modern diesel engine requires correct use.
That automatically means that he doesn't belong everywhere.
For intensive indoor use, short cycles, and frequent stops, electric is often the rational choice. This is where lithium-ion fully reveals its advantages: emission-free, quiet, and instant torque.
But there are applications where Diesel 2.0 still makes sense today.
Think about:
- Off-road forklifts on construction sites
- Outdoor areas without charging infrastructure
- Heavy loads over longer work cycles
- Continuous use in dusty or harsh environments
Under these conditions, a Stage V engine operates as designed: under load, at operating temperature and with correct regeneration of the DPF.
Modern engines use SCR aftertreatment with AdBlue to drastically reduce nitrogen oxides (NOx). Combined with the DPF, this significantly reduces local emissions.
In addition, many of these engines can be used without any problems with HVO100 (Hydrotreated Vegetable Oil) — a renewable paraffinic diesel.
HVO is a so-called “drop-in” fuel: no conversion, no technical adjustments, no downtime.
Depending on the origin, the CO₂ reduction can be up to 90% (well-to-wheel).
This makes Diesel 2.0 not only operationally logical, but also ecologically defensible within strict ESG objectives.
Where grid capacity is limited or fast charging infrastructure is lacking, a diesel machine can still be deployed immediately without additional investment in connections or charging stations.
Diesel is not an ideological choice here.
It is an operational choice.
Technology demands application
The modern diesel engine hasn't disappeared — it's been reinvented for those who use it correctly.
Under the Stage V emissions standard, it has evolved into a controlled, efficient power source. Not a one-size-fits-all solution, but not outdated technology either.
Electric has become the logical standard in many applications.
But where heavy loads, outdoor terrain and limited energy infrastructure converge, Diesel 2.0 remains rationally defensible today.
Not out of nostalgia.
Not out of resistance to change.
But from application.
Technology is not a battle between camps.
It is a design question: which energy suits which effort?
At Immer-Goed nv, we always start with this analysis. We consider not only the machine itself, but also its usage pattern, energy infrastructure, and your company's growth plans.
Are you unsure whether to choose electric or Stage V diesel?
We calculate an objective TCO (Total Cost of Ownership) comparison for your machine park, so you can decide based on figures — not on assumptions.