Fuel on the M4

London to Carmarthen via Bristol and South Wales · 189 miles

UK motorway services charge about 21.0p a litre more than forecourts off the motorway today. Fill up before you join, or leave at a junction.

Services on the M4

  1. Rontec Cardiff WestM4 Junction 33176.9pdiesel 202.9p
  2. Rontec MagorM4 Junction 23176.9pdiesel 202.9p
  3. Reading West Connect MwsaM4 Motorway Westbound195.9pdiesel 217.9p
  4. Reading East Connect MwsaM4 Motorway Eastbound195.9pdiesel 217.9p

Cheaper in town

The towns along the M4, with today's cheapest fuel near each.

Paying less on the M4

Fill up before you join at a supermarket in London or Swansea, or leave at a junction near Bristol if you need fuel on the way. A steady 55 to 60 mph and tyres at the right pressure use less fuel too.

Plan your fuel stops on the M4

Roadtrip plans where to stop for fuel on your route, shows live prices at every station on the way, and works out what the whole drive costs.

Plan a trip on the web
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The Roadtrip app showing a drive into London that costs £4.81 each, with fuel prices along the way