Most modern EVs look like long-haul champions on the spec sheet, but the paper numbers and the real world don’t always shake hands. The Norwegian Automobile Federation (NAF) and its independent membership magazine Motor are back with the bi-annual “El Prix” range test, putting 24 electric models through their paces to see which ones live up to their official WLTP ratings, and which ones fall flat.

This round was run under the kindest conditions an EV could ask for. NAF conducted the test during the Norwegian summer, with dry roads and temperatures hovering between 12 and 18°C (53.6 to 64.4°F).

More: EV Range Claims Still Sound Great, Until Freezing Temps Hit

The standout was the new BMW iX3 50 xDrive, which covered 781 km (485 miles) on a single charge. That’s not just close to its claim, it’s 1.5 percent beyond its official WLTP figure and a hefty 11.7 percent more than its advertised EPA range.

Predictably, the new iX3 posted a much higher range figure than the model it replaces. Even so, NAF points out that the previous-gen iX3 tested back in 2021 still holds the all-time summer record for positive deviation, beating its rating by 23.5 percent with 556 km (345 miles) of range.

More: EV Speed Comes At A Price, So Where’s The Sweet Spot?

As for the ultimate record for the longest range, it belongs to the Lucid Air that achieved 832 km (517 miles) in the summer of 2025. This year Lucid showed up with the Gravity SUV instead, which ran for 720 km (447 miles) before the battery gave out, falling 3.7 percent short of its expected figure.

The BMW drove the furthest, but the most impressive result of the year came from the XPeng X9. The Chinese minivan posted a real-world range of 646 km (401 miles), beating its WLTP rating of 580 km (360 miles) by 11.4 percent. That kind of overachievement is nothing new for XPeng, as the G9 SUV topped its advertised range by 13 percent back in the 2023 test.

More: This EV’s Real Range Misses By 23% But That’s Not The Worst Part

At the opposite end sat another Chinese model, the MG IM6 sedan, which managed just 446 km (277 miles), falling 11.7 percent short of its WLTP figure. Nils Sødal, senior communications adviser at NAF, said the result caught the team off guard: “We were surprised to see such a large negative deviation for this MG, especially when the other MG model, the S6, achieved a positive deviation of 3.4 per cent.”

The rest of the field stayed within a tight band, deviating from their stated range by anywhere from -5.7 to +5.4 percent, helped along by the dry roads and mild summer temperatures.

Interestingly, the facelifted Toyota bZ4X perfectly matched its WLTP figure of 506 km (314 miles) on the real-world test. However, the driver stated that the Japanese model showed 0% remaining battery 18 km (11 miles) before it actually ran dry. Keep in mind that NAF pushes these EVs to their absolute limit, driving each one until it’s completely discharged.

Below you can see the results for the full batch of 24 EVs that took part in the summer 2026 edition of the “El Prix,” ranked from the longest to the shortest range on a single charge.

Test Results

Got your hands on a shiny new EV or hybrid, and wondering why its range isn’t quite as much as quoted? Well, some of that discrepancy can be down to the controlled nature of official range tests, plus a healthy bit of marketing fluff.

But there’s another reason as to why that 300-mile EV or 800-mile plug-in hybrid isn’t quite making those headline numbers. It simply doesn’t like to run when it’s too hot or too cold outside. So what are the specifics, then? You can thank AAA for expanding and updating this line of research, which they began in 2019.

A Climate-Controlled Treadmill Test For Cars

How they did this kind of testing is no less cool. They took three hybrids and three EVs and placed them in a laboratory test cell that included a dyno. In other words, it was the equivalent of running on a treadmill in a temperature-controlled room. Then, they set the vehicle’s air conditioning and heating systems to a comfortable 72F. Meanwhile, the test cell’s temperature was varied. Engineers at AAA settled on three temperature values – namely 20F / -6.7C (a cold winter), 75F / 23.9C (your average day), and 95F / 35C (a hot summer’s day). And they drove.

Read: EV Range Claims Still Sound Great, Until Freezing Temps Hit

Taking 75F / 23.9C as the baseline, AAA found that at 95F / 35C, the electric vehicles lost an average of 8.5% in driving range, corresponding to a 10.4% efficiency reduction. Hybrids fared worse, with a 12% decrease in fuel efficiency (miles per gallon). These values are noticeable, but unlikely to create a noticeable impact unless you tend to push the range envelope before recharging or refueling. This also means that your wallet will take a mild hit in terms of cost per mile.

Cold weather tests were rather more concerning. At 20F, the EVs saw a whopping 35.6% efficiency drop, resulting in an average range reduction of 39%. Hybrids also took a noticeable hit, with a 22.8% drop in fuel efficiency.

The Bottom Line

If you live in a part of the world where winters and summers are mild, and the temperature generally hovers around 75F or thereabouts, congratulations, you don’t need to worry too much. If you live in a place where summers are hot, you’ll need to account for some extra range when purchasing your EV if you plan (or if your commute dictates) to run it down to 20% before every charge.

But if you live in a place where the winters are harsh, you may want to evaluate your options. As Greg Brannon, Director of Automotive Engineering and Research at AAA, said, “EVs are efficient in moderate temperatures but lose significant range in the cold. We expected this from our previous research, but were surprised by the 23% reduction in fuel economy for the hybrids in cold temperatures. Drivers should consider climate, energy costs, and driving patterns when choosing a vehicle that best fits their lifestyle.”

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