autocar-logo
Delhi

Triumph Thruxton 400 fuel economy tested, explained

The Thruxton 400 is the most powerful model among all the 400cc Triumph motorcycles.
2 min read21 Sep '25
Azaman ChothiaAzaman Chothia
16K+ views
Triumph Thruxton 400 at fuel pump
The Thruxton 400 is a cafe racer and is much more than just a Speed 400 with a fairing. It features a slightly more powerful engine, producing 42hp and 37.5Nm, which makes it the most powerful of all the Bajaj-made Triumph 400s. The bike also revs 1,000rpm higher (Redlines at 10,200rpm) and has a smaller rear sprocket than the Speed 400. Here’s a look at the Thruxton 400 mileage numbers from when we tested the bike.

Triumph Thruxton 400 real-world fuel efficiency

Thruxton managed 28.57kpl in the city, 33.85kpl out on the highway

For this test, we ran the Thruxton on the highway for just over 60km, after which the bike needed 1.79 litres of fuel to fill its tank again. Therefore, we arrived at a highway fuel economy number of 33.85kpl for the Thruxton 400
 
Once that was done, we ran the Thruxton through the traffic-riddled roads of Mumbai for 50km, after which the fuel tank needed 1.75 litres. And we achieved a city fuel efficiency figure of 28.57kpl. 

Triumph Thruxton 400 fuel economy analysis

The Thruxton is a little more work to ride in the city compared to the Speed 400

As mentioned above, the Thruxton 400 has a slightly more powerful engine than the Speed and Scrambler 400 X. It achieved a decent 28.57kpl in the city, which is around 2kpl less than the Speed 400 in the city. The motor in the Thruxton 400 felt tractable enough to cruise at 40kmph in fourth gear, thereby necessitating fewer throttle openings. However, do bear in mind that the committed riding position will be quite a struggle when encountering heavy traffic. 
 
Triumph Thruxton 400 fuel economy tested, explained
 
Out on the highway, the bike felt relaxed, thanks partly to the taller gearing and partly to the higher rev range, and in fact, it gave us minimally better mileage than the Speed 400. Since we have tested the mileage of all the Triumph 400s in similar conditions, here is how they fare against each other:
 
Triumph 400cc models mileage tested
Thruxton 400Speed 400Speed T4Scrambler 400 X
City
28.57kpl30.67kpl32.15kpl28.07kpl
Highway
33.85kpl33.57kpl38.86kpl34.71kpl

Autocar India’s fuel-efficiency testing

Our fuel-efficiency testing routine starts by first brimming the tank and ensuring the bike is running the manufacturer’s recommended tyre pressures. The bike is then ridden on fixed city and highway routes, where we maintain average speeds that best mimic real-world scenarios, while keeping speed limits in mind. The payload on the bikes is kept constant by balancing rider weights and ballast, ensuring consistency across different vehicles and riders. At the end of the test cycle, the fuel tank is once again filled to the brim, giving us an accurate figure of how much fuel has been consumed against the trip meter reading.
 
 

6 things to know before buying the Suzuki Gixxer SF 250

Here’s a rundown of the Gixxer SF 250, from performance and E20 compliance to price.
2 min read20 Sep '25
Ved JanveVed Janve

7 things to know before buying an Aprilia SR 175

From engine details to rivals, here’s a quick buyer’s guide to the Aprilia SR 175.
2 min read19 Sep '25
Ved JanveVed Janve

BMW S 1000 R vs rivals: Price and specifications compared

The S 1000 R is the most affordable European 1000cc supernaked on sale in India.
5 min read17 Sep '25
Dinshaw MagolDinshaw Magol
BMW S 1000 R vs rivals composite image

KTM 390 Adventure X: 3 reasons to buy and 2 to skip

If you’ve been thinking about a premium single-cyl adventure bike, the KTM 390 Adventure X has a lot going for it and only a few drawbacks.
2 min read14 Sep '25
Rishaad ModyRishaad Mody

How E20 petrol affects your bike and scooter explained

E20 petrol is a fuel blend containing 20 percent ethanol, which has now become commonplace across India.
4 min read13 Sep '25
Rishaad ModyRishaad Mody
Suzuki Access filling petrol at a fuel pump in India

Poll of the month

Which of these luxury car features would you like to see trickle down to mainstream cars?

Massaging seats
Active noise cancellation
Rear-wheel steering
Soft-close doors
Adaptive suspension
Auto-dimming ORVMs
3604 votes5 days remaining
Can't decide which car to buy?
Ask our experts and get answers to all your car related queries.