The 2025 Porsche Taycan 4 Cross Turismo (and the whole Porsche Taycan family) is one of the best DC fast-charging EVs on the US market. State Of Charge‘s recent test confirmed that it’s a charging monster that beats even its own specs.

Let’s check the state-of-the-art charging performance of a European electric car in two charging sessions — from 0-100% state-of-charge (SOC) and from 10-80% SOC.

Specs

The 2025 Porsche Taycan 4 Cross Turismo has a 105-kWh high-voltage battery (97 kWh of usable battery capacity). Its EPA Combined range is 277 miles, although in Tom Moloughney’s 70 mph range test, it achieved 302 miles despite testing a configuration with larger wheels and winter tires.

According to the manufacturer, the car can recharge from 10-80% SOC in just 18 minutes at up to 320 kW. These numbers reflect optimum charging conditions and the use of a high-power, high-voltage charger.

Charging Curve

The DC fast-charging test was conducted at an EVgo charger with a maximum output of up to roughly 325 kW. The charger’s maximum voltage of 950 volts and maximum current of 494 amps were higher than requested by the vehicle, thus not limiting charging performance.

The first graph below presents the charging power curve for the entire session from 0-100% SOC. The power increased relatively quickly from almost 150 kW at the beginning to almost 300 kW in the first few percent points. Once it crossed 300 kW at 9% SOC, it remained primarily flat up to about 63%, with a peak of 316 kW.

After 63% SOC, the charging power sharply decreased to just over 200 kW and remained like that up to about 74% SOC. Then, it started to gradually decrease, reaching just over 100 kW at 80% SOC. At that point, the rate of power decrease slowed down but continued until the very end.

Overall, it’s a very good charging curve with an average 0-100% SOC power of 122 kW (267 kW from 10-80% SOC).

Tom Moloughney also tested the car in the more popular 10-80% SOC window. As it turns out, the charging curve is very similar, with only a small difference between 63% and 72% SOC. This difference might have something to do with the battery temperature.

The average power in the 10-80% SOC window amounted to an outstanding 271 kW.

C-Rate

Assuming that the vehicle has a 105-kWh battery (total), the 2025 Porsche Taycan 4 Cross Turismo’s C-rate peaked at 3.0C. The average in the 10-80% SOC window in the two sessions was 2.5C-2.6C.

It’s a very good result, indicating that Porsche went above and beyond to maximize charging power. The 2C rate was available up to almost 75% SOC, which is also something exceptional.

Info: The C-rate indicates the correlation between the charging power and the battery pack capacity. A value of 1C would mean that the power value in kW is equal to the battery pack capacity in kWh and that at such power (current) rate, the battery would be fully recharged in 1 hour. The higher the C-rate, the higher the load on the battery and the faster it charges. A flat 2C would translate into a 30-minute charging session (0-100% SOC).

Charging Time

The charging session from 0-100% SOC took over 53 minutes, during which the vehicle received 107.9 kWh of energy, according to the charger. The session was pretty long, mostly due to the slow charging power after 80% SOC. Charging from 0-80% SOC took only 19 minutes. Charging beyond 80% SOC does not appear very fruitful, as the last 20 percentage points take 34 minutes.

The 10-80% charging session was very fruitful and took just over 16 minutes, beating the specs (10-80% in 18 minutes).

The direct comparison of the two charging sessions reveals that the highest power, or roughly 300 kW, is available for over 10 minutes. The power can stay above 200 kW for more than 15 minutes.

Range Replenishing Rate

Considering the 2025 Porsche Taycan 4 Cross Turismo’s EPA Combined range of 277 miles, its range replenishment rate during the first 10 minutes of the 0-100% SOC session was 13.3 miles per minute (133 miles added).

If we assume the 302-mile range achieved in the 70 mph range test, this rate increases to 14.5 miles per minute (145 miles added).

The second 10-minute period was slower at respectively 9.0 miles/minute and 9.8 miles/minute. The following 10-minute periods brought a significant slowdown to a level that’s not worth sitting at the charger unless absolutely necessary.

And here is a quick look at the 10-80% SOC charging session, which confirms a similar rate of range replenishment of almost 15 miles/minute in the beginning.

How Long To Add Driving Range

Alternatively, we could ask how long it would take to add a certain number of miles. The 2025 Porsche Taycan 4 Cross Turismo can add 100 miles of range in about 7 minutes. About 200 miles of range can be replenished in 16 minutes (14.1 minutes assuming the 302-mile range achieved in the 70 mph range test).

Because the charging speed significantly decreased after the first 20 minutes, replenishing the full range takes much longer.

In the 10-80% SOC test, 200 miles of highway range was replenished in just over 14 minutes.

DC Fast-Charging Matrix

Now, let’s summarize the entire charging session in a single image — the DC fast-charging matrix. It lists several main parameters: time, average charging power, the number of replenished SOC percent points, kWh of battery capacity, and miles of EPA Combined range added between certain starting and final SOC points.

The color map is entirely green (light/dark) because the charging curve was pretty flat, with the lowest values not very far from the peak values.

Please remember that the results might differ depending on a variety of factors, including the starting point of the session (which could shift the charging curve), charger, temperatures (ambient, that of the charger and its cable, and battery), and car (exact version, age, battery state-of-health, and software version).

The first matrix is for the 0-100% SOC test, assuming an EPA Combined range of 277 miles.

The second matrix is for the 10-80% SOC test (assuming 302 miles of range) achieved in the 70-mph range test. We believe that assuming roughly 300 miles is more appropriate for the Porsche Taycan, which has a long history of achieving a range higher than its EPA estimate.

Summary

After the analysis, we can confirm that the 2025 Porsche Taycan 4 Cross Turismo is one of the best DC fast-charging electric cars available in the US. These results can also be applied to other 2025 Porsche Taycan versions with the 105-kWh battery.

The results are even better than specs indicate. Charging from 10-80% SOC took just over 16 minutes instead of the 18 minutes expected. The peak power of 316 kW was near the promised 320 kW.

The range replenishing rate peaks at almost 15 miles/minute in the first 10 minutes of charging (assuming 302 miles of range from the 70-mph range test). About 200 miles of range can be replenished in just over 14 minutes, which is an outstanding result.

The initial 10-15 minutes of charging are the most fruitful. After that, the gradually decreasing charging power significantly limits the benefits of staying at the charger longer. Charging beyond 80% SOC should be avoided unless necessary.

The results might be significantly lower at a low-voltage charger.

In the coming weeks, we will compare the 2025 Porsche Taycan charging results with an all-new contender, the Lucid Gravity. The two models currently belong to the DC fast-charging heavy-weight class in the US.

Check more of our DC fast-charging analyses here.