Hi all,

-Had my 2025 Defender for about 8 months now and just passed 6800 miles on the clock. Given its winter up here, and most of my driving is highway, however I can't seem to crack 14.7 miles to the gallon.
My fuel consumption is not great, kind of feels like V8 mileage... Any thoughts? Im running winter tires and correct PSI.

Any advice would be appreciated!

 

My 22 110 SE with expedition rack and ladder and roof rack gets 18-20mpg regardless of the season.

Might be the tires as winter tires have a softer rubber compound. Interestingly we've had a pretty bad winter up here in Maine and my wife never mentioned that she thought we needed winter tires on the Defender.

 

With proper pressure even on winter tires, you should be getting 20 mpg on the highway. Do you have a rack on your P400 with other heavy gear? Headwinds can also affect your mileage quite a bit. Do you reset your mpg reading on your trip meter?

 

Hello! I have the same model, but mine is from the 2022 vintage and has only 20,000 miles. I'm using the BFG K02 tires, and the best fuel economy I've achieved is 16.1 miles per gallon (mpg). Currently, I'm averaging in the high 14s to low 15s mpg. What a bummer! My tires were installed by the dealer when I purchased my car, so I can't compare them to the stock tires. Most of my driving is around town on the flatlands of Miami, Florida. To improve my driving efficiency, I focus on gradual acceleration, smooth braking, and keeping engine speed below 2,200 RPM whenever possible. Unfortunately, it hasn't made a noticeable difference. I might consider trying a different tire when it's time to replace them.

 

I think the driving environment makes the biggest difference of all. Seems to me like you're right in the ballpark. For comparison sake, here are some in-car mpg results on my 2022 D90 P300 with stock 18" wheels and GY wrangler adventure tires from daily driving around hilly and traffic-packed Los Angeles (plus the occasional road trip to Phoenix or Palm Springs) since taking delivery new in Dec '21. (note: the trip meter resets every 10k).

My first ~10,000 miles:


And my second ~10,000 miles:

 

I have three: 23 P400 90, 23 P400 110, and a 25 OCTA. All get at least 20 MPH highway.

 

Are you sure about these measurements? Are you just trusting the computer on the car?

Either way -that’s old LR3/LR4 mileage. Defenders should be in the 20’s. Unless you modify. I get around 18 but I’ve added a winch, bulbar, bigger tires K02, rock sliders. Something isn’t adding up here which is why I question the value. That MPG calculation on the car isn’t accurate always. Have you need to do the math manually to cross check it?

 

I'd do a manual calculation to double check, the computers aren't always accurate. Even in my Disco 2 and LR3s/4 I've always gotten 18mpg on the highway and 13 in city, so something isn't adding up here unless you have all heavy steel bumper add ons or something.

 

I'll second that sounds very low. We have a 2024 P400 in the 130X spec (bigger and heavier). We get 20mpg on highway runs. 18 or so mixed and clearer suburbia. And 15 on short local run about.

Haven't noticed any difference in the 20mpg highway in summer and in cold winter. Traffic and stop start of course does make a difference

 

Ok, here is a pic of my dash. Shows the tire pressures as well as the exterior temp and average fuel consumption of 16.1 L/ per Km (or 14.6 G per mile in the US).
Should I add some psi to reflect the recommend tire pressure in brackets? Not towing, no roof rack, bone stock on 20" OEM wheels and standard tire specs (255/60/20) winter Pirellis.


Let me know!