Fuel prices by chain in Spain

BonÀrea is the cheapest of the 25 chains large enough to average here, at €1.68 a litre; Petronor is the dearest at €1.93. That is €0.26 a litre — €12.79 on a 50-litre tank — for the same fuel.

#	Chain	Petrol 95	Diesel	vs market	Sites
1	BonÀrea	€1.68	€1.62	−€0.16	65
2	Petroprix	€1.71	€1.70	−€0.13	178
3	Plenergy	€1.72	€1.71	−€0.12	389
4	Gasexpress	€1.72	€1.70	−€0.12	40
5	Ballenoil	€1.73	€1.72	−€0.11	415
6	Beroil	€1.74	€1.71	−€0.10	37
7	Esclatoil	€1.74	€1.70	−€0.10	71
8	Alcampo	€1.74	€1.69	−€0.10	45
9	Tamoil	€1.76	€1.74	−€0.08	30
10	Eroski	€1.76	€1.72	−€0.08	40
11	Agla	€1.79	€1.80	−€0.05	51
12	Q8	€1.84	€1.82	+€0.00	81
13	Meroil	€1.84	€1.80	+€0.00	40
14	Shell	€1.85	€1.81	+€0.01	342
15	AVIA	€1.85	€1.82	+€0.01	101
16	Galp	€1.88	€1.84	+€0.04	455
17	Carrefour	€1.88	€1.85	+€0.04	146
18	ENI	€1.90	€1.86	+€0.06	41
19	BP	€1.91	€1.87	+€0.07	152
20	Cepsa	€1.91	€1.89	+€0.07	563
21	Valcarce	€1.91	€1.87	+€0.07	48
22	Campsa	€1.92	€1.89	+€0.08	56
23	Moeve	€1.92	€1.89	+€0.08	586
24	Repsol	€1.93	€1.89	+€0.09	2,740
25	Petronor	€1.93	€1.89	+€0.09	161

Chains with fewer than 30 priced forecourts are left out. An average over a handful of sites is a fact about those sites, not about the chain.