DC fast charging is a complex topic, as various models can be compared using different metrics, including charging power, time of charging, or how quickly they replenish range. In the latest episode of State Of Charge, Tom Moloughney compares the two top DC fast-charging models in the US: the 2025 Porsche Taycan and the 2025 Lucid Gravity, in hopes of finding out which has a higher range replenishment rate.

We already had an opportunity to present the 2025 Porsche Taycan 4 Cross Turismo’s DC fast-charging analysis and the initial results of the 2025 Lucid Gravity GT charging tests in April (a stand-alone analysis is coming). Today, we will take a look at the results from 0-100% state-of-charge sessions side-by-side.

Specs

The tested 2025 Lucid Gravity GT has a 123-kWh battery (926 volts) and can accept up to about 400 kW of power from a high-voltage charger (950-1,000 volts). According to its specs, the luxury SUV can replenish 200 miles of range in less than 12 minutes. At low-voltage chargers, the power output is lower (up to 225 kW).

The EPA Combined driving range of the Lucid Gravity is 386-450 miles, depending on the version and wheel size.

The 2025 Porsche Taycan 4 Cross Turismo has a noticeably smaller, 105-kWh high-voltage battery (97 kWh of usable battery capacity). According to the manufacturer, the car can recharge from 10-80% state-of-charge (SOC) in just 18 minutes at up to 320 kW.

The EPA Combined range of the 2025 Porsche Taycan family with the 105-kWh battery varies from 252 to 318 miles. The Porsche Taycan 4 Cross Turismo is rated at 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.

The Porsche Taycan sedan, range tested by Out of Spec’s Kyle Conner, achieved 367 miles at 70 MPH (compared to 318 miles EPA), and this is the value we will consider when comparing to the most efficient Lucid Gravity with a 450-mile range.

Charging Curve

The DC fast-charging test of the 2025 Porsche Taycan 4 Cross Turismo was conducted at an EVgo charger with a maximum output of up to roughly 325 kW. For the 2025 Lucid Gravity GT, we will use results from two charging sessions: one at a 350+ kW EVgo charger and one at a 400-kW ChargePoint charger (using data from Out of Spec’s Kyle Conner).

The first graph below presents the charging power curves for the entire session from 0-100% SOC. The Porsche Taycan has a very flat charging curve with a stable charging power level of around 300 kW between 3% and 63% SOC. In the case of the Lucid Gravity, the charging power is higher — up to 400 kW, but the maximum values are available only initially, and then the power gradually decreases after about 20% SOC.

Interestingly, between 40% and 80% SOC, the Porsche Taycan charges at a higher power than the Lucid Gravity. After 80% SOC, the two charge at a very similar level.

Both charging curves are pretty strong. The average 10-80% charging power inside the 0-100% SOC session amounted to 267 kW for the Porsche Taycan and 241 kW for the Lucid Gravity (400-kW charger). At a 350+ kW charger, the Lucid Gravity achieved an average of 225 kW, but this session was affected by some thermal throttling (thermal derating) in the 45-50% SOC window.

C-Rate

The 2025 Porsche Taycan 4 Cross Turismo’s C-rate peaked at 3.0C, while the average in the 10-80% SOC window was over 2.5C.

In the case of the 2025 Lucid Gravity GT, the C-rate peaked at 3.2C (400-kW charger), while in the 10-80% SOC window, it averaged at nearly 2.0C.

This means that the Porsche Taycan’s battery was under a heavier charging load than the Lucid Gravity’s battery. Both C-rates are high, although the Porsche Taycan has a clear advantage over the Lucid Gravity, which helps to partially mitigate the lower peak charging power.

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 Porsche Taycan reached 80% SOC in 19 minutes, much faster than the Lucid Gravity, but it has a smaller battery. The Lucid Gravity required 26 minutes (400-kW charger) and 27.5 minutes (350-kW charger) to get to 80% SOC.

Now, let’s take a look at the direct comparison of charging power over time. As we can see, the Lucid Gravity can accept a third more power for about 10 minutes. Then the Porsche Taycan has a small advantage for several minutes. After that, the Lucid Gravity, with its larger battery, continued to charge at a higher power.

Range Replenishing Rate

The most important part of the analysis is a comparison of the range replenishing rate. For the purpose of this article, we will use Lucid Gravity’s maximum EPA Combined range of 450 miles, since there are no range test results yet.

For the 2025 Porsche Taycan 4 Cross Turismo, we will assume 277 miles of EPA Combined range and 302 miles of range in Tom’s 70 MPH range test. Additionally, we will use the 367-mile range achieved by a 2025 Porsche Taycan sedan with the same battery in the test by Out of Spec’s Kyle Conner (the EPA result was 318 miles).

As we can see in the table below, the range replenishment rate during the first 10 minutes of the 0-100% SOC session was exceptionally high. The Lucid Gravity averaged at up to 19 miles per minute (190 miles added in 10 minutes).

The Porsche Taycan’s EPA numbers are usually lower than its real-world range test results, which is why we should focus more on the 70 MPH range test. It’s also more fair to compare the best numbers. Here, the Porsche Taycan sedan achieved 17.6 miles/minute (176 miles of range added in 10 minutes).

The second 10-minute period brought similar results of almost 12 miles/minute (almost 120 miles of range added) in both cases.

After that, the following 10-minute periods indicate a significant slowdown of range replenishing speed; thus, after 30 minutes, it’s not worth sitting at the charger unless absolutely necessary.

Overall, the most efficient Lucid Gravity with a 450-mile range is expected to replenish its range slightly faster than the most efficient Porsche Taycan.

How Long To Add Driving Range

Alternatively, we could ask how long it would take to add a certain number of miles. The Lucid Gravity outpaces the Porsche Taycan here as well.

For example, the Lucid Gravity needs just 10.6-10.9 minutes to replenish 200 miles of its EPA range. The Porsche Taycan will require 11.4 minutes to add 200 miles of range, as calculated from its 70 MPH range test.

The time to replenish 300 miles of range is also similar — as low as 19 minutes in the Lucid Gravity and just over 20 minutes for the Porsche Taycan.

We don’t have Lucid Gravity’s range test results yet, but it seems that it won the range replenishment rate contest with the Porsche Taycan. That is, unless it is not able to achieve at least 430 miles from its 450-mile rating.

One thing is certain: in both cases, the charging speed significantly decreased after the first 20 minutes.

Summary

The comparison indicates that the 2025 Lucid Gravity can offer not only a higher range but also a higher range replenishment rate than the 2025 Porsche Taycan. Nonetheless, the 2025 Porsche Taycan is only slightly behind. Both EVs have exceptionally good DC fast-charging characteristics.

In the best-case scenario, replenishing 200 miles of range might take just around 11 minutes. That’s a really outstanding result. If time is of the essence, the driver should continue driving after the initial 10-15 minutes. Adding 300 miles of range might require about 20 minutes, as the charging speed slows down.

The results might be significantly lower at a low-voltage charger (including V3 Superchargers).

Check more of our DC fast-charging analyses here.