How Much Does 100 km Cost with Petrol, Diesel, and Hybrid in Latvia in 2026?

At the moment when fuel prices really start to hurt, drivers no longer want vague ideas like “a hybrid is probably cheaper” or “diesel is still likely the most economical.” They want a clear answer in numbers. How much does 100 km actually cost with petrol? How much with diesel? And how much with a hybrid, if we use today’s real Latvian fuel prices instead of brochure claims or old assumptions?

This is one of the strongest comparison-intent questions in the automotive niche because it gets straight to the point: what does movement itself cost? Not insurance, not tires, not future repairs, but the actual act of driving. That is exactly why the cost of 100 km matters so much to people who are thinking about their next car or simply trying to understand whether their current choice still makes sense.

In this article, we will compare petrol, diesel, and hybrid running costs using today’s fuel prices you provided for Latvia. We will not only show the theoretical cost of 100 km, but also what that means over a month and over a year. And to make this more than just a dry calculator exercise, we will also add some driver perspective — because in real life, numbers always meet real routes, real habits, and real emotions.

How we calculate the cost of 100 km

The formula itself is simple: fuel consumption per 100 km is multiplied by the fuel price per litre. The difficult part is not the maths. The difficult part is choosing realistic consumption figures. Manufacturer numbers often look great, but what people care about is not the laboratory — it is everyday life.

So here we will use sensible real-world examples rather than ideal best-case records. For comparison, we will assume three very typical scenarios: a petrol car consuming 7.5 l/100 km, a diesel car consuming 5.5 l/100 km, and a full hybrid consuming 4.8 l/100 km. These are not universal numbers for every single car, but they are realistic enough for a comparison that feels useful and fair.

For the hybrid, we use the price of 95 petrol, because most popular full hybrids are driven daily on 95 petrol. If a car requires 98, the cost would be slightly higher.

Even from this one comparison, you can already see the pattern clearly. With today’s prices, the lowest cost per 100 km in this example belongs to the hybrid, followed by diesel, while petrol ends up being the most expensive of the three. But this is also the point where many people make conclusions too quickly. Because the cost of 100 km is not the whole story. It is very important, but it has to be read together with how the car is actually used.

Where diesel still looks strong

If we look only at these three figures, diesel is still far from a weak option. 10.59 € per 100 km is a serious argument for someone who drives long distances, spends plenty of time on the highway, and lives in a driving pattern that suits diesel well. If mileage is high, this gap adds up quickly.

For example, if someone drives 1,500 km per month, then using our assumed numbers, a petrol car would cost around 195 € in fuel, diesel around 159 €, and a hybrid around 125 €. That means the monthly gap between petrol and diesel in this scenario is about 36 €, while the difference between petrol and hybrid is already around 70 €.

Over a year, at 20,000 km, the difference becomes even clearer. In this example, a petrol car would need around 2,599 € in fuel, diesel around 2,118 €, and a hybrid around 1,664 €. And that is exactly where many people start asking the question more seriously — do I want lower fuel use, lower cost per 100 km, or lower overall day-to-day stress?

“The only real strength of petrol is short trips.”

— comment from a car forum

That forum quote is intentionally sharp, but it reflects one popular way drivers think about this. Many people who regularly do long-distance driving still see diesel as the logical choice. And from a pure fuel-cost perspective, for high enough mileage, it often still is.

Where the hybrid starts winning not only on paper

Now let’s look at the hybrid. In this example, it costs 8.32 € per 100 km. That is already clearly lower than petrol at 12.99 €, but also noticeably lower than diesel at 10.59 €. And this is where it is important to remember that a full hybrid shows its strongest side not in an abstract brochure, but in a very specific city rhythm — slow traffic, stop-start movement, frequent braking, and calmer daily driving.

That means for someone who mainly drives in Riga, suburban traffic, or any city with traffic lights, queues, and shorter trips, a hybrid can become not only mathematically cheaper, but also more pleasant in everyday life. This becomes even more noticeable when fuel prices are high and every litre starts to feel psychologically heavier.

“With a C-HR hybrid, only in Riga, in summer I get 4.0 litres, now up to 4.8.”

— comment from a car forum

This is a good example of why hybrids should not be judged only in theory. The person in the forum is not talking about a laboratory test, but about real city use. Of course, not every car and not every route will give exactly this result. But it shows very clearly why hybrids in 2026 have become a serious alternative to diesel for many drivers.

Why petrol still does not disappear from the picture

Looking at the figures, it is tempting to quickly conclude that petrol loses this comparison. And in pure fuel cost terms, it does look more expensive. But petrol’s strength is often not the cheapest 100 km. Its strength is simplicity, familiarity, flexibility, and a daily ownership logic that feels easy to live with, especially when annual mileage is not huge or when the car mainly lives on shorter trips.

Someone who drives less — for example 10,000 to 12,000 km per year — experiences this cost difference very differently from someone doing 30,000 km. The lower the total mileage, the less dramatic the yearly fuel gap becomes. And that is where petrol starts recovering its logic, because the driver begins to evaluate not only the cost per 100 km, but everything else that comes with the choice.

“Definitely automatic, preferably petrol. I’m tired of diesel and DPF.”

— comment from a car forum

That quote is rough, but very alive. It contains the whole logic of driver fatigue. The moment someone starts thinking not only about fuel price, but also about everyday peace of mind, diesel’s theoretical economy can begin to feel less convincing. And then petrol starts looking not like the loser, but simply like a different kind of sensible choice.

What the cost of 100 km tells you — and what it does not

This comparison is very useful, but it should not be turned into an overly simple rule. The cost of 100 km is excellent for showing the raw cost of movement. It helps you understand how strongly fuel prices affect daily life. It helps compare powertrains in a way that is simple and easy to understand. And it is a very good place to start thinking more clearly.

But the cost of 100 km alone does not tell you everything about whether a car is truly cost-effective. It does not tell you whether the car is living in the right driving environment. It does not tell you how important city comfort is to the owner. It does not tell you how stressful a certain engine type feels in daily life. And it does not tell you whether the person even drives enough for the fuel difference to become decisive.

That is why the smartest driver uses this number not as a final verdict, but as a starting point. First understand the cost of 100 km. Only then add the rest of the questions.

If you compare fuel alone, the conclusion is clear

If we look only at fuel cost in Latvia today, using our assumed real-world consumption figures, the picture is straightforward: the hybrid wins, diesel comes second, and petrol is the most expensive. With the 95 petrol and diesel prices you provided, that is clearly visible.

But the more your driving happens in the city, the stronger the hybrid’s argument becomes. The more your driving happens on the highway and the higher your annual mileage, the more logical diesel looks. Petrol, meanwhile, still keeps its place as a simple and often very reasonable solution for lower or medium mileage drivers.

Conclusion

With today’s prices in Latvia, in this example comparison, 100 km costs around 12.99 € with petrol, around 10.59 € with diesel, and around 8.32 € with a hybrid. So if we look only at fuel cost, the hybrid is the cheapest, diesel follows behind it, and petrol is the most expensive of the three.

But the most important conclusion is slightly different: the cheapest 100 km does not automatically mean the best car for you. These numbers provide a very important starting point, but the final choice still depends on whether your life happens in the city, on the motorway, in short trips, or with high annual mileage. The smarter the comparison, the smaller the chance of regretting the choice later.

If you want to compare your own real fuel consumption and calculate what 100 km or a full month costs you in different scenarios, use the calculator below.

Calculate your fuel costs with the calculator