If you’re shopping a used Kia Sportage IV, fuel economy ends up on the short list pretty fast. Not because everyone is trying to drive like a grandparent, but because this is still a fairly heavy SUV and it costs money every day you commute.
This Sportage IV article compares real-world fuel consumption for the petrol (including LPG) and diesel versions. The Sportage IV also matters in Poland because buyers loved it after the third generation landed in 2010, and the fourth version arrived in 2016 with the same “practical crossover” vibe.
Let’s get into what it actually drinks, which powertrain runs the cheapest, and what I’d watch for as a mechanic when someone says, “This one uses way more fuel than it should.”
The Kia Sportage IV became a particularly popular choice with Polish customers, including people hunting for a used car. It helped that the fourth incarnation, unveiled in 2016, kept the model’s strengths and made it more appealing for a wider range of owners.
Depending on how you use it, the Sportage IV can work as a family SUV (it has a spacious 503-liter trunk), a functional city car (19-centimeter ground clearance helps with high curbs), or even a light off-roader (some engine versions were optionally configured with 4×4 drive).
Still, no matter your use case, fuel consumption stays a deciding factor. The Sportage IV wasn’t offered with hybrid powertrains, so you shouldn’t expect it to be as fuel-efficient as possible, even if turbodiesels often help fuel economy.
So how much fuel does a used Kia Sportage IV actually consume? Which powertrain is the cheapest to run: petrol (with or without LPG) or diesel? Let’s compare real-world numbers for the petrol and diesel versions.
Kia Sportage IV fuel consumption with petrol engines
The Kia Sportage IV was available with only two petrol engines. Neither is “economy king” territory, but neither should be treated like a fuel-drinking problem either.
According to the numbers you shared, the naturally aspirated 1.6 GDI needs around 7.5 to 8 liters per 100 km in the combined cycle. The more powerful 1.6 T-GDI consumes significantly more, easily over 9 liters per 100 km in combined use.
City driving makes it worse. The 1.6 T-GDI goes past 11 liters per 100 km in the city, and the 1.6 GDI ranges from 9 to 9.5 liters per 100 km in city use.
On favorable runs, the petrol Kias can drop below 7 liters per 100 km with the GDI, or below 8 liters per 100 km with the T-GDI. That “below” part is important because many owners feel disappointed in stop-and-go traffic, then get happier on steady highway driving.
One thing I like about this breakdown is it stays honest. It doesn’t hide behind an optimistic number that only happens on the smoothest road and with perfect traffic. If you buy used, you’re still going to drive in imperfect conditions, and these ranges reflect that reality.
Petrol Sportage IVs are still relatively fuel efficient compared to some rivals. Your source mentions several competitors and their real-world consumption, which helps you set the expectations correctly.
For example, the Ford Kuga II with 1.5 or 1.6 EcoBoost engines consumes at least 8.5 liters per 100 km in reality and can approach 11 liters per 100 km. The Nissan Qashqai II with small turbo engines (1.2, 1.3, or 1.6 DIG-T) rarely exceeds 8 liters per 100 km, even though it’s often a little less powerful (115 to 163 hp).
Peugeot 3008 IIs with powerful 1.6 THP engines (165 or 180 hp) consume slightly less than the Kia. The source says they only need an average of 7.5 to 8.5 liters per 100 km. Similar results are expected in the twin Hyundai Tucson III (same engines), and in the second-generation Volkswagen Tiguan, except the 2.0 TSI versions with over 200 hp.
| 1.6 GDI 132 HP | 6.3-7.2 l/100 km | approx. 7.5-8 l/100 km |
| 1.6 T-GDI 177 HP | 7.3-7.9 l/100 km | approx. 9-9.5 l/100 km |
What changes fuel use on petrol Sportage IVs in the real world
Numbers like “around 7.5 to 8 liters” only tell part of the story. As a mechanic, I see the same engine family behave differently based on the vehicle condition and driving style, even when the owner believes they drive the same way every week.
If you want a practical way to think about it, consider three buckets: how you drive, how the car is maintained, and whether it’s running the way it should. Driving habits cover things like hard acceleration and frequent stop-start. Maintenance covers items like air filtration and ignition components.
On the maintenance side, when petrol engines run rich or misfire, fuel consumption usually jumps. If you ever suspect that with a used Sportage IV, an OBD-II scan tool that can show live data like fuel trims and misfire counters helps you see what the ECU is reacting to. You can also use the data to check whether the engine is stable at idle and under light load.
For a wider reference on why fuel economy varies from official or expected values, the US Department of Energy explains how driving behavior changes fuel consumption (see fuel economy driving habits on fueleconomy.gov). That won’t change the Sportage IV’s numbers from your source, but it explains the gap many owners feel day to day.
Kia Sportage IV fuel consumption with petrol engines running LPG
The Kia Sportage IV isn’t typically the first pick for LPG installation. Your source gives the reason clearly: the petrol engines use direct fuel injection, and that requires a more expensive LPG system.
It also says that some LPG setups involve petrol post-injection, which undercuts the point of going LPG, especially if the car is used mainly in the city. That’s the trade-off owners feel, because they pay for the system but might still burn noticeable petrol depending on the control strategy.
Even so, a few examples exist on the used market. The source notes that these are mostly Kias powered by 1.6 GDI engines.
Owners report average LPG fuel consumption around 10.5 to 11 liters per 100 km. That’s about 3 liters per 100 km higher than cars without the LPG system.
City usage rises to around 12 liters per 100 km, while highway driving can drop to around 9.5 liters per 100 km. Your source also flags that these results include residual petrol consumption of around 1.5 liters per 100 km.
That last point matters when you’re comparing engines. If someone tells you “my LPG Sportage uses 10.something on LPG,” you still want to remember there’s still some petrol burned in the background, and the numbers in this article reflect that.
Also, if you’ve ever seen a conversion that seems “good on paper” but burns more than expected, the reason is often how the system behaves in city driving. Stop-and-go traffic forces more transitions, and if petrol post-injection is part of the setup, it shows up right away.
| 1.6 GDI LPG | – | approx. 10.5-11 l LPG/100 km |
How to judge LPG on a used Sportage IV without getting fooled by display numbers
From a mechanic-editor point of view, I’d treat LPG fuel consumption numbers like they’re only half the story unless you understand how much petrol is still being used. Your source already says the reported LPG results include residual petrol consumption, roughly 1.5 liters per 100 km.
If you’re evaluating a used car with LPG, the simplest approach is to verify consumption on a measured route and not only rely on what the dashboard estimates. Even a good system can look “great” if you only test on gentle highway traffic. Then your city driving ruins the math.
When I help owners estimate real usage, I also encourage them to log fuel consumption after stable conditions, like after the car is fully warmed and you’ve done a consistent driving pattern. That way you can compare the LPG setup to the petrol and diesel expectations from the same source.
Kia Sportage IV fuel consumption with diesel engines
Diesel Sportage IVs follow a pattern that’s easy to summarize. Less powerful diesel engines in the middle of the range have similar consumption, while the top-of-the-line 185 horsepower version stands out.
Your source states that only the top-of-the-line 185-horsepower version (2.0 CRDi) clearly lags behind. Its average fuel consumption is the same as the Sportage 1.6 GDI, around 7.5 to 8 liters per 100 km.
However, for city driving, expect figures in excess of 9 liters per 100 km, which is quite a lot. In favorable conditions, this version can be reduced to around 6.5 to 7 liters per 100 km.
The source also gives a comparison for combined fuel consumption of the 136 and 141 hp turbodiesels, saying it’s around 6.5 to 7 liters per 100 km for combined use. It notes that the 1.6 CRDi slightly more may be due to fewer user reports.
It then breaks it down further: the diesels drink more in the city (around 8 to 8.5 liters per 100 km) while on the highway they consume around 6 liters per 100 km. For the most efficient diesel versions, the source is pretty direct.
The Sportage with 115 hp 1.6 or 1.7 CRDi diesel engines consumes the least. The source says the average is 6 to 6.5 liters per 100 km, the city is 7 to 7.5 liters per 100 km, and outside the city it’s approximately 5.5 liters per 100 km.
Now the comparison across competitors is where a lot of shopping decisions get made. Your source says these results don’t put the Kia Sportage IV among the most fuel-efficient models in its class.
It lists several competitors and their typical real-world averages: the Nissan Qashqai II 1.5 dCi (110 or 115 hp), Peugeot 3008 II 1.5 HDi (130 hp), and Volkswagen Tiguan II 2.0 TDI (115 hp) all average less than 6 liters per 100 km, sometimes even closer to 5 liters per 100 km.
On the other hand, Ford Kuga II 1.5 and 2.0 TDCi (120 hp) uses closer to 7 liters per 100 km, so more than the Kia. And when looking at slightly more powerful diesel engines in competition around 150 hp, the source says the Sportage IV has comparable fuel consumption or even slightly lower. It gives an example where the 150 hp Tiguan II uses slightly more than 7 liters per 100 km.
| 1.6 CRDi 115 HP | 4.8-5.0 l/100 km | approx. 6-6.5 l/100 km |
| 1.6 CRDi 136 HP | 4.8-5.2 l/100 km | approx. 7-7.5 l/100 km |
| 1.7 CRDi 115 HP | 4.6-4.7 l/100 km | approx. 6-6.5 l/100 km |
| 1.7 CRDi 141 HP | 4.9 l/100 km | approx. 6.5-7 l/100 km |
| 2.0 CRDi 136 HP | 4.8-5.7 l/100 km | approx. 6.5-7 l/100 km |
| 2.0 CRDi 185 HP | 5.2-5.9 l/100 km | approx. 7.5-8 l/100 km |
Diesel reality check: why some owners see worse numbers
Diesel engines can be efficient, but when people complain their Sportage is drinking fuel, it’s often not the engine design. It’s the combination of driving style and condition.
If a used diesel has issues like poor air flow or something that causes it to run less efficiently, fuel consumption can climb above the expected ranges. The ECU tries to correct, but you can end up with fuel trims and cylinder-to-cylinder behavior that point to a problem.
Since your source already gives a clear “least consuming” diesel engine (1.6 or 1.7 CRDi at 115 hp), you can use that as your baseline when talking to sellers. If a 115 hp version is reporting numbers that are way out of line, I’d rather see diagnostics than guess.
On any modern engine, I start with what an OBD-II scan tool can show. Live data like fuel trim behavior, sensor plausibility, and misfire counters (when the engine supports it) is a fast way to spot patterns before you start buying parts.
Also, remember that official fuel economy numbers are measured under standardized conditions. If you want background on the test-cycle idea, the European Union has explanations for WLTP and how it relates to reported consumption, which can help you understand why real-world numbers vary. You can read about WLTP from the European Commission at commission.europa.eu.
Kia Sportage IV which one is cheapest to drive: petrol, LPG, or diesel?
Now we get to the question most buyers really mean. Not “what’s the consumption,” but “what’s the cost of driving.” Your source brings in current average fuel prices in Poland, using a link to wyborkierowcow.pl.
Based on those fuel price assumptions, the cheapest car for everyday driving will be the Sportage IV with an LPG system. The source says that even after factoring in the cost of moderate petrol consumption, such a car will cover 100 km for around 47 PLN.
The reason it works out that way is that the significant difference in the price of Pb95 and diesel makes fuel costs for petrol and diesel Kias essentially equal. For the 1.6 GDi and diesel versions with up to 141 hp, fuel cost is around 50 to 55 PLN per 100 km.
For the 1.6 T-GDI and the 2.0 CRDi with 185 hp, the source says it lands around 62 to 63 PLN per 100 km. That’s more than LPG, but it’s not low enough to make converting a Sportage IV to alternative fuel feel worthwhile, at least within the scope of your source’s comparisons.
Here’s my mechanic take on interpreting this part. It’s not telling you “buy LPG no matter what.” It’s showing how the math looks when you combine consumption and local fuel prices. If your driving is heavy on city stop-and-go, the LPG advantage can still exist, but you’ll see it through the residual petrol note and the city usage numbers.
How I’d estimate your own fuel cost using the source numbers
Let’s say you’re looking at two used Sportage IVs and you want your own “cheapest to drive” answer. Don’t rely only on someone else’s trip computer reading, because it can be optimistic or just plain wrong depending on calibration.
Instead, use the structure of the source. Pick the engine and consumption range that matches your mix (city versus outside city). Then multiply your expected liters per 100 km by your local fuel price, and convert to the same “per 100 km” style the source uses.
If you want to keep it consistent with what your source is doing, treat LPG like the special case it already is. Your LPG numbers include residual petrol consumption around 1.5 liters per 100 km, so you need to include both fuels in your estimate, not just the LPG display.
What I’d check on a used Sportage IV before believing the seller’s fuel story
Fuel consumption claims from sellers can be anywhere from honest to overly optimistic. As a shop guy, I’d rather validate the basics that influence efficiency and drivability, because that’s where “mystery consumption” usually comes from.
Start with the easy stuff that doesn’t require special tools. Check tire condition and pressure, confirm there’s no obvious vacuum leak, and look at maintenance records for routine items that affect air and spark behavior on petrol or air and injection behavior on diesel.
Then use a scan tool if you can. Even a basic OBD-II reader is helpful for confirming trouble codes, and if your scanner supports live data, you can look at how the engine is responding under load.
This is exactly why I don’t treat fuel consumption as “only a math problem.” It’s often a “car condition and tuning” problem disguised as a fuel economy problem.
Quick takeaway for buyers
If you want the simplest guide from the numbers you shared, here it is. Petrol Sportage IVs are not the most economical, but the 1.6 GDI can land around 7.5 to 8 liters per 100 km combined, while the 1.6 T-GDI typically sits higher at easily over 9 liters per 100 km combined.
LPG conversions exist, mostly on 1.6 GDI models, but the reported LPG consumption is around 10.5 to 11 liters per 100 km with city closer to 12 and highway around 9.5, and those figures include residual petrol consumption of around 1.5 liters per 100 km.
Diesel is the efficiency story for most buyers, especially the 115 hp 1.6 or 1.7 CRDi engines with average around 6 to 6.5 liters per 100 km. The 2.0 CRDi 185 hp version is the one that clearly lags, with average around 7.5 to 8 and city over 9.
For pure cost in Poland using the source’s fuel price assumptions, your cheapest everyday option is the LPG version at around 47 PLN per 100 km, while petrol and diesel versions up to 141 hp land around 50 to 55 PLN and the 1.6 T-GDI plus 185 hp 2.0 CRDi sit around 62 to 63 PLN per 100 km.
Expert verdict: If you want to buy on fuel cost, the LPG Sportage IV wins on paper in the source, but make sure you understand the residual petrol piece and how the car is driven. If you want efficiency without conversion complexity, the 115 hp diesel versions are the best bet from the provided ranges. Either way, verify the car’s condition with a quick inspection and a basic OBD-II scan before trusting claimed consumption, because that’s where “real-world” can swing a lot.