Évora: in 1 of 8 places a 50-litre fill-up in Spain saves at least €10 for a detour of 45 min at most; the best is Mourão (+€12.88, prices of 3 November 2026).
Official prices: Portugal (DGEG) as of 3 November 2026, Spain (MITECO) as of 3 November 2026 · Methodology
Worth the drive 1Only if you're passing 1Small gain 3Not worth it 2Too far 1