Route planner

Cheapest Unleaded from Cardiff to Swansea

Route length: 41.6 miles · Corridor: 5 miles · 10 stations found

Cheapest: Blackmill Service Station (141.9p/L)

How route value is measured

Estimated total uses 45L at pump price, plus round-trip detour fuel using 35 mpg.

Low-confidence prices are excluded from route ranking.

Adjust your route

Use this panel to test postcodes or coordinates quickly. Results update in place while this page URL stays canonical for sharing.

Planning snapshot

Review route cost, detour, and coverage together before you commit to a stop.

10 stations

Route length

41.6 miles

Corridor

5 miles

Fuel type

Unleaded

Travel time

48 min

Assumptions

45L · 35 MPG

Travel time is shown for guidance only and is not included in route ranking.

Cheapest: Blackmill Service Station (141.9p/L)

Follow the route line, then jump straight to a station card from the map.

10 markers

Tap a marker to jump to its station card.

Route map

The route line follows the road route used to match stations along your journey.

List remains usable

Top recommendation

Estimated total (45L)

£64.78

Detour

+2.5 mi off route

Route position19.3 miles from start

Save £4.05 vs Cardiff

Cheapest on route

Independent

Blackmill Service Station

Blackmill Service Station, Melin Ifan Ddu, Pen-Y-Bont Ar Ogwr CF35 6DR

2.5 mi

141.9p/L

Unleaded

Updated 17 Mar, 14:36Long-standingOpen now

Price has been long-standing for 30+ days; worth a quick pump check.

Amenities

Car wash

View station

Stations along this route

10 total

Estimated total (45L)

£67.77

Detour

+0.8 mi off route

Route position21.4 miles from start

Independent

Pen-y-fai Service Station

Leyshon Flint & Sons, Pen Y Fai Service Station, Pen-Y-Fai, Bridgend Wild Mill CF31 4LL

1410 yd

149.9p/L

Unleaded

Updated 21 Apr, 07:50Changed this weekOpen now

View station

Estimated total (45L)

£67.99

Detour

+0.2 mi off route

Route position20.8 miles from start

On route

Sainsbury's

Sainsburys Bridgend

6A Welsh Designer Outlet Village Derwen CF32 9ST

350 yd

150.9p/L

Unleaded

Updated 23 Apr, 23:47Changed this weekOpen now

Amenities

Car wash

View station

Estimated total (45L)

£68.10

Detour

+0.5 mi off route

Route position10.8 miles from start

On route

Texaco

Miskin Corner Service Station

G H Griffiths & Sons Ltd, Miskin Corner Service Station, School Road, Meisgyn, Pont-Y-Clun CF72 8PG

880 yd

150.9p/L

Unleaded

Updated 20 Apr, 08:16Changed this weekOpen 24 hours

View station

Estimated total (45L)

£68.36

Detour

+1.2 mi off route

Route position11.5 miles from start

Sainsbury's

Sainsburys Talbot Green

Heol Y Pant, Talbot Green CF72 8FN

1.2 mi

150.9p/L

Unleaded

Updated 21 Apr, 22:15Changed this weekOpen now

View station

Estimated total (45L)

£68.36

Detour

+2.3 mi off route

Route position20.5 miles from start

Texaco

Cowbridge Road Service Station

G H Griffiths & Sons, Nisa Local, Cowbridge Road, Bridgend Whiterock CF31 3BD

2.3 mi

149.9p/L

Unleaded

Updated 21 Apr, 10:45Changed this weekOpen now

Amenities

Toilets
Car wash

View station

Estimated total (45L)

£68.44

Detour

+1.3 mi off route

Route position11.3 miles from start

Tesco

Pontyclun Talbot Green Extra - Petrol Filling Station

Green Park Talbot Green CF72 8RB

1.3 mi

150.9p/L

Unleaded

Updated 22 Apr, 13:36Changed this weekOpen 24 hours

Amenities

Toilets
Car wash

View station

Estimated total (45L)

£68.85

Detour

+0.1 mi off route

Route position35.2 miles from start

On route

Independent

Baglan Service Station

38 Swan Road Baglan Briton Ferry SA12 8LA

180 yd

152.9p/L

Unleaded

Updated 21 Apr, 13:38Changed this weekOpen now

View station

Estimated total (45L)

£68.97

Detour

+0.4 mi off route

Route position34.3 miles from start

On route

Morrisons

MFG Morrisons Port Talbot Baglan

Christchurch Road Sandfields SA12 7DA

700 yd

152.9p/L

Unleaded

Updated 24 Apr, 21:42Changed recentlyOpen now

Amenities

LPG
Car wash

View station

Estimated total (45L)

£69.02

Detour

+2.8 mi off route

Route position9.7 miles from start

Texaco

Llantwit Main Service Station

Griffiths Forecourts, Llantwit Main Service Station, Beddau, Pontypridd Llantwit Fardre CF38 2FF

2.8 mi

150.9p/L

Unleaded

Updated 20 Apr, 08:09Changed this weekOpen now

Amenities

Toilets

View station

Optional next steps

Useful tools and offers for this journey, kept separate from the main route decision.

Recommended

Planning a regular journey?

See what this route could cost over a year and compare fuel types.

PetrolSavings tool

Calculate annual commute cost

Adjust your route

Route map

Stations along this route

Related routes

Planning a regular journey?