On 21 September 2026, the national average price of diesel in Spain reached € 1.91/l, the highest value in our daily series, which covers 25 March – 21 September 2026. That is € 0.002 a litre above the previous peak of € 1.91/l, recorded on 19 September 2026.
Our daily national series for this market covers 25 March – 21 September 2026 — 6 months — so no comparison here reaches further back than that. Between 14 September 2026 and 21 September 2026 the national average rose 3.3%, from € 1.85/l to € 1.91/l. The current level is 26.3% above the 25 March – 21 September 2026 low of € 1.51/l, reached on 30 June 2026.
Percentages, price differences and fill-up estimates are calculated from unrounded national averages. Prices shown in prose and tables are rounded to two decimal places.
Key figures
| Fuel | 20 Sep | 21 Sep | Change | 14 – 21 September 2026 | Stations |
|---|---|---|---|---|---|
| Diesel | € 1.91/l | € 1.91/l | +0.1% | +3.3% | 12,042 / 12,042 |
| Petrol | € 1.91/l | € 1.91/l | 0.0% | +2.1% | 11,288 / 11,288 |
Across all reporting stations the change is +0.1%; across the 12,042 stations that reported on both days it is +0.1%. The panel covers 100.0% of the smaller daily sample.
| Metric | Value | Stations |
|---|---|---|
| All reporting stations | +0.1% | 12,042 / 12,042 |
| Matched-station panel | +0.1% | 12,042 |
| Panel coverage | 100.0% | 12,042 |
Spain diesel average, 24 June – 21 September 2026
Chart values as a table
| Day | Average | Stations |
|---|---|---|
| € 1.52/l | 11,986 | |
| € 1.52/l | 11,986 | |
| € 1.52/l | 11,986 | |
| € 1.52/l | 11,986 | |
| € 1.51/l | 11,988 | |
| € 1.51/l | 11,988 | |
| € 1.56/l | 11,989 | |
| € 1.55/l | 11,995 | |
| € 1.55/l | 11,995 | |
| € 1.55/l | 11,995 | |
| € 1.55/l | 11,995 | |
| € 1.55/l | 11,997 | |
| € 1.55/l | 11,998 | |
| € 1.55/l | 11,998 | |
| € 1.57/l | 11,999 | |
| € 1.57/l | 11,999 | |
| € 1.57/l | 12,000 | |
| € 1.57/l | 12,000 | |
| € 1.57/l | 12,002 | |
| € 1.60/l | 12,003 | |
| € 1.60/l | 12,003 | |
| € 1.64/l | 12,003 | |
| € 1.64/l | 12,003 | |
| € 1.65/l | 12,003 | |
| € 1.67/l | 12,003 | |
| € 1.67/l | 12,003 | |
| € 1.69/l | 12,004 | |
| € 1.69/l | 12,004 | |
| € 1.72/l | 12,006 | |
| € 1.73/l | 12,007 | |
| € 1.73/l | 12,007 | |
| € 1.74/l | 12,007 | |
| € 1.74/l | 12,007 | |
| € 1.75/l | 12,008 | |
| € 1.76/l | 12,008 | |
| € 1.76/l | 12,008 | |
| € 1.81/l | 12,008 | |
| € 1.81/l | 12,008 | |
| € 1.81/l | 12,008 | |
| € 1.83/l | 12,012 | |
| € 1.83/l | 12,012 | |
| € 1.81/l | 12,012 | |
| € 1.81/l | 12,012 | |
| € 1.80/l | 12,015 | |
| € 1.80/l | 12,015 | |
| € 1.80/l | 12,015 | |
| € 1.80/l | 12,016 | |
| € 1.80/l | 12,016 | |
| € 1.81/l | 12,016 | |
| € 1.82/l | 12,018 | |
| € 1.82/l | 12,018 | |
| € 1.82/l | 12,018 | |
| € 1.82/l | 12,018 | |
| € 1.83/l | 12,019 | |
| € 1.84/l | 12,020 | |
| € 1.84/l | 12,021 | |
| € 1.85/l | 12,021 | |
| € 1.85/l | 12,021 | |
| € 1.85/l | 12,022 | |
| € 1.85/l | 12,022 | |
| € 1.86/l | 12,022 | |
| € 1.86/l | 12,022 | |
| € 1.85/l | 12,022 | |
| € 1.85/l | 12,024 | |
| € 1.85/l | 12,024 | |
| € 1.84/l | 12,025 | |
| € 1.84/l | 12,025 | |
| € 1.77/l | 12,028 | |
| € 1.78/l | 12,030 | |
| € 1.79/l | 12,030 | |
| € 1.79/l | 12,030 | |
| € 1.80/l | 12,030 | |
| € 1.80/l | 12,032 | |
| € 1.80/l | 12,032 | |
| € 1.81/l | 12,034 | |
| € 1.81/l | 12,034 | |
| € 1.81/l | 12,036 | |
| € 1.83/l | 12,036 | |
| € 1.83/l | 12,036 | |
| € 1.85/l | 12,037 | |
| € 1.85/l | 12,037 | |
| € 1.88/l | 12,038 | |
| € 1.88/l | 12,038 | |
| € 1.90/l | 12,042 | |
| € 1.91/l | 12,042 | |
| € 1.91/l | 12,042 | |
| € 1.91/l | 12,042 |
Calculation details
Values below are the unrounded daily national averages used for every figure in this article, shown to 6 decimal places. Percentage change = (later average − earlier average) ÷ earlier average × 100.
| Metric | Value | Unit |
|---|---|---|
| Diesel, daily national average on 20 September 2026 | 1.910475 | EUR/l |
| Diesel, daily national average on 21 September 2026 | 1.912802 | EUR/l |
| Diesel, daily national average on 19 September 2026 | 1.910475 | EUR/l |
| Difference, 20 September 2026 to 21 September 2026 | 0.002328 | EUR/l |
| Percentage change, 20 September 2026 to 21 September 2026 | 0.1218 | % |
| Diesel, daily national average on 14 September 2026 | 1.850967 | EUR/l |
| Percentage change, 14 September 2026 to 21 September 2026 | 3.3407 | % |
Source and method
Prices are reported by station operators to Geoportal de Hidrocarburos (Ministerio para la Transición Ecológica y el Reto Demográfico (MITECO)). We collect them once a day and calculate the averages in this article ourselves. The national average is the unweighted mean of the 12,042 stations that reported a valid price for diesel, after we drop readings outside our plausibility range. Full method: how we calculate.
This article reports only what our calculations from station-price data show. It does not attribute the change to any cause.
The data behind this article
Data details
| Data snapshot | 21 September 2026 (Europe/Madrid) |
|---|---|
| Method version | 2026-08-06.1 |
| Template version | 2.0.0 |
| Source freshness | Last collection cycle of the day: 2026-09-21 19:40:27; 12,042 readings collected that day. |
| Included | Gasóleo A (B7): 12,042 stations with a valid price |
| Excluded | 0 readings outside the plausibility range 0.50–5.00 a litre, 0 flagged by the source, 0 from stations not in our catalogue |
| Matched coverage | 12,042 stations reported on both 20 September 2026 and 21 September 2026 — 100.0% of the smaller daily sample |
| Corrections | No corrections |