UK Road Fuel Cost Estimator
Cardiff → Newport
How much petrol or diesel does it cost to drive from Cardiff to Newport? Breakdown by vehicle type using today's United Kingdom fuel prices, updated from the datasource.
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Fuel Cost by Vehicle Type
Select your vehicle to see the detailed fuel breakdown for this route. Prices as of 18 May 2026.
Monthly Fleet Fuel Cost
Running this route regularly? Estimated one-way fuel cost per month, by trip frequency. Figures use primary fuel for each vehicle type (toll excluded).
| Vehicle | 1×/month | 5×/month | 10×/month | 22×/month |
|---|---|---|---|---|
Motorcycle Petrol | GBP 1 | GBP 4 | GBP 8 | GBP 17 |
Car / SUV Petrol | GBP 3 | GBP 13 | GBP 26 | GBP 58 |
Van / MPV Diesel | GBP 4 | GBP 21 | GBP 41 | GBP 91 |
Lorry Diesel | GBP 7 | GBP 37 | GBP 75 | GBP 164 |
Add GBP 0.00 toll per one-way trip to get total trip cost per journey.
Full Fuel Cost Comparison
All vehicle types × all fuel types for this route.
| Vehicle | km/L | Petrol | Diesel | Fuel + Toll |
|---|---|---|---|---|
| Motorcycle | 40 | GBP 0.79 | — | GBP 0.79 |
| Car / SUV | 12 | GBP 2.62 | — | GBP 2.62 |
| Van / MPV | 9 | GBP 3.50 | GBP 4.15 | GBP 4.15 |
| Lorry | 5 | — | GBP 7.46 | GBP 7.46 |
"Fuel + Toll" uses the primary fuel type for each vehicle. Toll is one-way estimate.
Today's Fuel Prices in United Kingdom
GOV.UK weekly road fuel prices used in all calculations above
Last updated: 18 May 2026. Prices are sourced from GOV.UK weekly road fuel prices.
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Common Questions: Cardiff to Newport
How far is Cardiff to Newport?
The highway distance from Cardiff to Newport is approximately 20 km. The estimated driving time is 0h 16m under normal highway conditions.
How much petrol does a car use from Cardiff to Newport?
A typical car with 12 km/L mileage uses approximately 1.7 litres of petrol. At today's Petrol price (GBP 1.57/L), that costs GBP 2.62.
How much does a lorry spend on diesel from Cardiff to Newport?
A lorry averaging 5 km/L needs about 4.0 litres of diesel for this route. At GBP 1.87/L, the fuel cost is GBP 7.46 one-way.
What is the toll charge from Cardiff to Newport?
The estimated one-way toll on this highway route is approximately GBP 0.00. Most UK road charges are limited to specific crossings, bridges, tunnels, or the M6 Toll. This rollout keeps the route-level baseline at zero and links the official charge pages for the main tolled corridors.
How much does a motorcycle spend on fuel from Cardiff to Newport?
A motorcycle averaging 40 km/L uses about 0.5 litres. At today's Petrol price, that's GBP 0.79, making it the most fuel-efficient option for this route.
What is the total cost (fuel + toll) for a delivery van on this route?
A delivery van using diesel at 9 km/L needs 2.2 litres, costing GBP 4.15 in fuel. Add the GBP 0.00 toll for a total one-way cost of approximately GBP 4.15.
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