# Route from Portsmouth to Dumbarton by car

**From:**Portsmouth, County: Hampshire,

**England**

**To:**Dumbarton, County: West Dunbartonshire,

**Scotland**

**461 mi**

**7 h 38 min**

## How many miles from Portsmouth to Dumbarton?

## How far is from Portsmouth to Dumbarton?

The driving distance between Portsmouth and Dumbarton is 461 miles. Travel time is 7 hours and 38 minutes by car.

**461 mi 7 h 38 min**

## How much does it cost to drive from Portsmouth to Dumbarton?

The fuel cost by car depend on several factors such as the distance traveled, the driving conditions (traffic jam, slow driving, normal driving, race driving), fuel consumption of the vehicle, and the current price of fuel.

The trip with petrol fuel costs **80 £**.
In the above calculation, the petrol price is considered to be **143 pence per liter** and the petrol consumption of the car is **37.5 miles per gallon**.

For **2 passengers** in carpooling, the cost of this trip is **40 £** (80/2) per passenger.

For **3 passengers** in the car, the cost of this trip is **26.67 £** (80/3) per passenger.

For **4 passengers** in the car, the cost of this trip are **20 £** (80/4) per passenger.

**Fuel cost** = (461.26 mi / 37.5 mpg) x 143 pence per liter = **80 £**

**In more detail, the result is obtained:**

Fuel needed = Distance / Car fuel consumption = miles * 4.54609 / carConsumtion = 461.26 mi * 4.54609 / 37.5 mpg = 55.9 liters

Fuel needed = 55.9 lt

Fuel cost = Fuel needed x Price per liter = 55.9 liters x 143 pence per liter = 80 £

Fuel cost from Portsmouth to Dumbarton = 80 £

**Why do I multiply miles by 4.54609?**

Consumption is measured in miles per gallon. 37.5 mpg means that a car could travel 37.5 miles with a gallon petrol fuel. The price of fuel is in pence per liter. Gallons should be converted to liters so that the final fuel consumption on a trip is in liters. 1 gallon is 4.54609 liters, so multiply by 4.54609.

The trip with diesel fuel costs **50.5 £**.
In the above calculation, the diesel price is considered to be **151 pence per liter** and the diesel consumption of the car is **62.7 mpg**.
For only one passenger the cost of the trip is 50.5 £.

For **2 passengers** in carpooling, the cost of this trip is **25.25 £ **(50.5/2) per passenger.

For **3 passengers** in the car, the cost of this trip is **16.83 £** (50.5/3) per passenger.

For **4 passengers** in the car, the cost of this trip is **12.63 £** (50.5/4) per passenger.