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Cheapest Petrol & Diesel from Cardiff to Swansea

Route length: 41.6 miles (about 48 min) · Distance from route: 5 miles · 10 stations found

Recently updated prices along this route: petrol from 167.9p/L, diesel from 194.9p/L.

Cheapest: P W Millar Ltd at 152.9p/L (price unchanged for 30+ days)

Top recommendation

Cheapest on route
Texaco logo
Texaco
P W Millar Ltd

148 Port Road East, BarriCF62 9PZ

152.9p/L
Unleaded
Price unchanged since 30 Jun, 14:53 · verify at the pump
Open 24 hours

Estimated total: £69.91 for 45L, +2.8 mi off route, Route position: 4.7 mi from start

Staying on the route? Texaco Miskin Corner Service Station comes to £76.22, £6.31 more than the top pick (+2.8 mi off route).

Stations along this route

10 total

How route value is measured: estimated total = 45L at pump price + round-trip detour fuel at 35 MPG.

Travel time is not included in route ranking. Low-confidence prices are excluded from route ranking.

Oil4wales Maesteg logo
Oil4wales Maesteg

Oil 4 Wales Ltd, Llwydarth Road, MaestegCF34 9EY

154.9p/L
Unleaded
Price unchanged since 29 May, 10:12 · verify at the pump
Open 24 hours

Estimated total: £71.61 for 45L, +4.7 mi off route, Route position: 23.2 mi from start

Amenities
  • Toilets
  • Car wash
On route
Texaco logo
Texaco
Baglan Service Station

38 Swan Road, BaglanSA12 8LA

168.9p/L
Unleaded
Price unchanged since 22 Sept, 11:17 · verify at the pump
Closed nowOpens Friday at 06:00

Estimated total: £76.05 for 45L, +0.1 mi off route, Route position: 35.2 mi from start

On route
Texaco logo
Texaco
Miskin Corner Service Station

G H Griffiths & Sons Ltd, School Road, Meisgyn, PontyclunCF72 8PG

168.9p/L
Unleaded
Price unchanged since 21 Sept, 19:42 · verify at the pump
Open 24 hours

Estimated total: £76.22 for 45L, +0.5 mi off route, Route position: 10.8 mi from start

Gulf logo
Gulf
Llanharan Service Station

Llanharan, Pont-Y-ClunCF72 9NR

167.9p/L
Unleaded
Price changed 17 Oct, 09:16
Open now

Estimated total: £76.40 for 45L, +1.9 mi off route, Route position: 14.0 mi from start

Sainsbury's logo
Sainsbury's
Sainsburys Talbot Green

Heol Y Pant, Talbot GreenCF72 8FN

168.9p/L
Unleaded
Price changed 18 Oct, 08:56
Closed nowOpens Friday at 07:00

Estimated total: £76.52 for 45L, +1.2 mi off route, Route position: 11.5 mi from start

Tesco logo
Tesco
Pontyclun Talbot Green Extra - Petrol Filling Station

Green Park, Talbot GreenCF72 8RB

168.9p/L
Unleaded
Price unchanged since 24 Sept, 15:15 · check before you travel
Open 24 hours

Estimated total: £76.60 for 45L, +1.3 mi off route, Route position: 11.3 mi from start

On route
Morrisons logo
Morrisons
MFG Morrisons Port Talbot Baglan

Christchurch Road, Port TalbotSA12 7DA

169.9p/L
Unleaded
Price changed 17 Oct, 23:01
Closed nowOpens Friday at 06:00

Estimated total: £76.64 for 45L, +0.4 mi off route, Route position: 34.3 mi from start

Murco logo
Murco
Murco, Pen-y-Fai Service Station

Leyshon Flint & Sons, Pen Y Fai Service Station, Pen-Y-FaiCF31 4LL

169.9p/L
Unleaded
Price unchanged since 06 Oct, 08:50 · check before you travel
Closed nowOpens Friday at 06:00

Estimated total: £76.81 for 45L, +0.8 mi off route, Route position: 21.4 mi from start

On route
Sainsbury's logo
Sainsbury's
Sainsburys Bridgend

6A Welsh Designer Outlet Village, SarnCF32 9ST

170.9p/L
Unleaded
Price changed 17 Oct, 06:01
Closed nowOpens Friday at 05:30

Estimated total: £77.00 for 45L, +0.2 mi off route, Route position: 20.8 mi from start

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About the Cardiff to Swansea drive

The drive from Cardiff to Swansea is about 42 miles and takes around 48 min without traffic. The 10 stations we list are within 5 miles of the route, near Barri, Maesteg and Baglan, from brands including Texaco, Sainsbury's, Oil4wales Maesteg and Gulf. At 35 MPG the trip uses about 5 litres of petrol: about £9.07 at the cheapest recent price anyone can buy along the route (167.9p/L, updated 17 Oct). That's 6.7p a litre cheaper than the UK average of 174.6p/L (GOV.UK, week of 19 Oct).

Cardiff to Swansea fuel questions

The cheapest recently updated petrol price anyone can buy along the route is 167.9p/L at Llanharan Service Station, Llanharan (updated 17 Oct). Stations with older prices, or members-only ones, can be cheaper still: the list above ranks every station by what a fill-up costs, detour included, and shows how old each price is.

At the cheapest recent price anyone can buy along the route, 167.9p/L (updated 17 Oct), a 45-litre fill-up costs about £75.56. The drive itself uses about 5 litres at 35 MPG, about £9.07. Your own car may use more or less, so change the tank size and MPG in the route options to fit it.

No. Petrol is from 167.9p/L and diesel from 194.9p/L along this route, so petrol is 27p a litre cheaper. Prices updated 20 Oct.

Most prices come from the UK Fuel Finder scheme, which petrol stations use to report their prices. Each station shows when its price last changed, so if it has been a while, check the price at the pump.

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