Gasoline 95 vs 98 in Spain 2026: Is Premium Fuel Worth It?
Both fuels come from the same crude oil distillation process. The difference is the octane rating — a measure of how resistant the fuel is to premature ignition (engine knocking).
Current Prices — 95 vs 98 in Spain
Gasolina 95 E5
€1.587
Gasolina 98 E5
€1.694
Difference
+0.107 €/L
Last updated: 2026-03-23T17:10:10Z. Source: MITECO.
Does Premium Gasoline Actually Save You Money? The Real Math
Scenario: Average Spanish driver (15,000 km/year, 7L/100km)
| Item | Gasolina 95 | Gasolina 98 |
|---|---|---|
| Average consumption | 7L/100km | 7L/100km |
| Cost per 100km | €11.11 | €11.86 |
| Annual Cost | €1666 | €1779 |
Verdict: 98 costs you significantly more per year. For the average driver, that's money you'll never see again.
You spend roughly €112 extra per year with no performance gain.
When 98 Actually Makes Sense
- Your car specifically requires itIf your owner's manual specifies RON 98, always follow it.
- High-compression turbo enginesHigh-performance sports cars benefit from the 1-3% efficiency gain.
Common Myths About Premium Fuel
"98 is cleaner": False. Both meet the same EN 228 detergent standards in Spain.
"Better mileage": For 99% of cars, the efficiency difference is within the margin of error.
Pages.fuel.pillars.g95vs98.faq.title
Can I use 95 in a car that recommends 98?▼
Only in an emergency. Using a lower octane fuel than specified can cause engine knocking.
Does 98 have more octane?▼
Yes. The Research Octane Number (RON) for 95 is minimum 95; for 98 it's minimum 98.
Is 98 worth it for a 10-year-old car?▼
Unless your owner's manual specifically recommends 98 for that engine, no. Older engines with lower compression ratios don't benefit from higher octane fuel.
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