Cardiff to St Austell

via M5/A30

2h 5min
Drive Time
106
Miles
£17
Petrol Cost
£0
Tolls
Reverse EV Trip

Trip Details

Distance106 miles (170 km)
Drive Time2h 5min
RouteM5/A30
Best TimeEarly morning (before 7 AM)

Fuel Costs

Petrol (40 mpg)~12.0 litres
Est. Cost£17

Driving Tips for This Route

For a comfortable drive on this UK route, plan your journey around peak traffic hours — typically 7:30–9:30 AM and 4:30–6:30 PM on weekdays. Motorway services such as Welcome Break, Moto, and Roadchef provide convenient stopping points for refuelling and refreshments. Remember that all speed limits are in miles per hour, and average speed cameras are increasingly common on major routes. At roundabouts, signal your intentions clearly and give way to the right. If driving in winter, watch for black ice on rural stretches and keep your headlights on during poor visibility conditions.

Frequently Asked Questions

How long does it take to drive from Cardiff to St Austell?
The drive from Cardiff to St Austell takes approximately 2h 5min covering 106 miles via M5/A30. Actual time may vary based on traffic, weather, and road conditions.
How much does petrol cost for Cardiff to St Austell?
At 40 MPG and £1.40/litre, expect to spend approximately £17 on petrol for this 106-mile trip. You'll need about 12.0 litres of fuel.
What is the best time to drive from Cardiff to St Austell?
Early morning (before 7 AM) to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the Cardiff to St Austell route?
This route is toll-free. The UK has very few toll roads — the main ones are the M6 Toll near Birmingham and the Dartford Crossing on the M25.