How much can I save on fuel by exiting at M4 Junction 23a?

Drivers typically save approx £9.90 on a standard 55L fill-up by taking the slip road at Junction 23a and driving 2.6 miles to local forecourts (171.9p) instead of paying typical motorway service area prices (~189.9p/L).

Where is the closest petrol station to M4 Junction 23a?

The closest forecourts are located within 2.6 miles off the junction roundabout, providing rapid refuelling without long detours.

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Junction 22

Avonmouth, Bristol Port (M49), Prince of Wales Bridge

Newport West, Risca, Ebbw Vale

Exit & Save Calculator

Save ~£9.90 at M4 Junction 23a

Motorway service station pumps charge ~189.9p/L. Exit at Junction 23a (Magor Services / Newport East / A4810) and drive just 2.6 miles off the slip road to refuel from 171.9p (saving 18.0p per litre).

Forecourts Near M4 Junction 23a (Magor Services, Caldicot, Newport East)

Forecourt	Unleaded	Diesel	Off Slip Road
BP - NTS MANOR GARAGE SERVICE STATION D M S AUTO SERVICES LTD	171.9p	198.9p	2.6 mi
GULF - Hillcroft Stores HILLCROFT GARAGE	174.9p	198.9p	3.1 mi
ESSO - RONTEC MAGOR M4 JUNCTION 23	178.9p	205.9p	0.2 mi

All M4 Junction Exits (26 Exits)

Jct 3 Jct 4 Jct 5 Jct 6 Jct 10 Jct 11 Jct 12 Jct 13 Jct 14 Jct 15 Jct 16 Jct 17 Jct 18 Jct 19 Jct 20 Jct 22 Jct 23a Jct 28 Jct 30 Jct 32 Jct 33 Jct 36 Jct 42 Jct 47 Jct 49 Jct 8-9