Lexus NX — MPG & Fuel Costs 2025

What is the real-world MPG of the Lexus NX?

The Lexus NX achieves approximately 40 MPG in real-world petrol driving — around 12% lower than the official WLTP figure of 47.9 MPG due to real driving conditions. Diesel variants achieve around N/A MPG real-world.

How much does it cost to fill a Lexus NX?

The Lexus NX has a fuel tank of 55 litres. At the UK average of 136.8p/litre for petrol, a full tank costs approximately £75.24. Diesel costs approximately £78.16 for a full tank.

What is the annual fuel cost for a Lexus NX?

At the UK average annual mileage of 7,400 miles and current petrol price of 136.8p/litre, a Lexus NX costs approximately £1151 per year in fuel. At 10,000 miles/year the cost rises to £1555. Actual costs vary with your driving style and mileage.

Is it worth driving to a cheaper petrol station in a Lexus NX?

In a Lexus NX doing ~40 MPG real-world, driving 3 miles round-trip to save 10p/litre on a 44-litre fill nets approximately £3.93 after the extra fuel cost. You could drive up to 28 miles before the saving is eaten up. Use the WorthThePump calculator for your exact situation.

How much does the Lexus NX cost per mile in fuel?

The Lexus NX costs approximately 15.5p per mile in petrol at current UK prices. Over a typical commute of 30 miles per day, that is approximately £4.65 per day in fuel.

What is the WLTP MPG figure for the Lexus NX?

The official WLTP fuel economy figure for the Lexus NX is 47.9 MPG. However, real-world MPG is typically 10–15% lower than WLTP due to cold starts, air conditioning, motorway speeds, and varying loads. WorthThePump uses a 12% real-world penalty to give a more accurate estimate.