A16 services at Grande-Synthe: is it worth leaving the motorway for fuel?
Leave the motorway to fill up
Petrol 95 costs €2.349/L here, 36 c/L more than at the Grande-Synthe station (1 Av De Petite Synthe), exit 54a: leaving the motorway saves €17.34 on 50 litres for a 4.0 km, 7 min detour (prices of 30 October 2026).
30 c/Ldiesel, services mark-up
36 c/Lpetrol 95, services mark-up
+€17.34petrol 95, saving on 50 L
| Exit | 54a (Port - 3800 à 4000) |
|---|---|
| Detour | 4.0 km · 7 min |
| Tolls | no toll on this stretch |
Diesel — Leave the motorway to fill up
Price at the services: €2.449/L (1 November 2026) · Services mark-up (median): 21 c/L.
Price at the services€2.449/L
Dunkerque€2.150/L
Gap30 c/L
Stations near the exit
| Station | Saving on 50 L | Price | Detour |
|---|---|---|---|
| DunkerqueAv De La Villette | +€12.84 | €2.150/L | +13 km · 15 min |
| Bourbourg3 Rue Jean Varlet | +€12.56 | €2.183/L | +4.7 km · 9 min |
| Coudekerque-BrancheRue Jacquard | +€11.79 | €2.165/L | +15 km · 15 min |
| Coudekerque-Branche89 Avenue Jean Baptiste Lebas | +€11.60 | €2.162/L | +17 km · 18 min |
| Grande-SyntheAvenue de l'Ancien Village | +€10.17 | €2.234/L | +3.6 km · 5 min |
Petrol 95 — Leave the motorway to fill up
Price at the services: €2.349/L (30 October 2026) · Services mark-up (median): 31 c/L.
Price at the services€2.349/L
Grande-Synthe€1.990/L
Gap36 c/L
Stations near the exit
| Station | Saving on 50 L | Price | Detour |
|---|---|---|---|
| Grande-Synthe1 Av De Petite Synthe | +€17.34 | €1.990/L | +4.0 km · 7 min |
| GravelinesRoute De Dunkerque | +€16.89 | €1.990/L | +6.9 km · 12 min |
| DunkerqueAv De La Villette | +€15.93 | €1.990/L | +13 km · 15 min |
| Bourbourg3 Rue Jean Varlet | +€14.79 | €2.039/L | +4.7 km · 9 min |
| Coudekerque-Branche14 Route De Furnes | +€14.53 | €1.990/L | +22 km · 20 min |