Porsche Taycan 4S: energy use, battery size and what it costs to charge

EPA figures for 2024, 2025, 2026 Porsche Taycan 4S (11 configurations), plus the cost to charge at home in every U.S. state at May 2026 electricity prices.

The Porsche Taycan 4S uses 36.24 kWh per 100 miles. Across the 223 electric cars on sale that figure runs from 23.1 to 66.1, which puts this one around the middle.

How much does it cost to charge a Porsche Taycan 4S?

At the U.S. average residential price of 19.42¢ per kWh, a Porsche Taycan 4S costs about $7.04 per 100 miles, $19.95 for a full charge, and $845 a year at 12,000 miles. The same car costs $570 a year in Nevada and $2,293 in Hawaii — a 4.0× difference driven entirely by where you plug in.

Porsche Taycan 4S vs. a petrol car

A typical new gasoline compact car returns 33 MPG. At $4.32 a gallon — the U.S. average for the week of 2026-09-14, up 14.3% on the year — that is $13.09 per 100 miles against $7.04 for the Porsche Taycan 4S on average-priced electricity. Over 12,000 miles the fuel difference is $726 a year in favour of the electric car.

Cost to charge a Porsche Taycan 4S in every state

Every Porsche Taycan 4S configuration compared

Questions people ask about the Porsche Taycan 4S

How many kWh per 100 miles does a Porsche Taycan 4S use?

The Porsche Taycan 4S uses 36.24 kWh per 100 miles on the EPA combined cycle, which works out to 2.76 miles per kWh. Across all 11 EPA-rated configurations it ranges from 36.24 to 43.21 kWh per 100 miles.

How big is the Porsche Taycan 4S battery?

Its usable battery capacity works out to roughly 102.7 kWh. EPA does not publish battery size directly, so this is calculated from EPA range (315 miles) and rated energy use, corrected for charging losses — expect a few kWh of error against the manufacturer figure.

How much does it cost to charge a Porsche Taycan 4S at home?

About $19.95 for a full charge at the U.S. average residential electricity price of 19.42¢ per kWh, or $7.04 per 100 miles. Over a year at 12,000 miles that is $845. In Nevada the same driving costs $570; in Hawaii it costs $2,293.

How long does a Porsche Taycan 4S take to charge on a 240V charger?

EPA rates it at about 13 hours for a full charge on a 240-volt (Level 2) charger. A standard 120-volt household outlet takes roughly five to six times longer; DC fast charging is far quicker but costs considerably more per kWh than charging at home.

Is a Porsche Taycan 4S cheaper to run than a gasoline car?

On fuel alone, yes. A Porsche Taycan 4S costs about $7.04 per 100 miles in electricity. A typical new gasoline compact car manages 33 MPG, which at $4.32 a gallon costs $13.09 per 100 miles — $6.05 more. Over 12,000 miles the difference is $726 a year in the EV's favour. This compares fuel only — not insurance, depreciation, maintenance or your state's EV registration fee.

Cars to compare it with

Almost identical energy use

These use within a fraction of a kWh per 100 miles of the Porsche Taycan 4S, so running cost is effectively a wash between them — the decision comes down to everything else.

Other electric compact cars

• BMW i4 M60 — 34.39 kWh/100mi
• BMW i5 M60 — 34.05 kWh/100mi
• BMW i5 xDrive40 — 33.7 kWh/100mi
• Rolls-Royce Spectre — 41.61 kWh/100mi
• Rolls-Royce Spectre Black Badge — 43.21 kWh/100mi
• BMW i5 eDrive40 — 29.06 kWh/100mi
• BMW i4 eDrive40 — 28.56 kWh/100mi
• Mercedes-Benz CLA350 with EQ Tech — 28.56 kWh/100mi
• Mercedes-Benz CLA250 with EQ Tech — 26.75 kWh/100mi

Other Porsche electric cars

• Macan 4 Electric — 33.04 kWh/100mi
• Macan 4S Electric — 36.64 kWh/100mi
• Macan Electric — 32.1 kWh/100mi
• Macan GTS Electric — 36.64 kWh/100mi
• Macan Turbo Electric — 37.04 kWh/100mi
• Taycan — 36.64 kWh/100mi
• Taycan 4 — 36.24 kWh/100mi
• Taycan GTS — 39.19 kWh/100mi
• Taycan GTS Sport Turismo — 41.1 kWh/100mi
• Taycan Turbo — 39.19 kWh/100mi

Where these numbers come from

Energy use per 100 miles is 3,370.5 ÷ MPGe, because EPA defines MPGe against 33.705 kWh per gasoline gallon equivalent. EPA meters that energy at the wall, so charging losses are already included.

Usable battery size is EPA range × kWh per 100 miles ÷ 100 × 0.90. The 0.90 corrects for the fact that EPA measures energy at the wall but measures range from the pack; without it the estimate runs about 10% high. It is an estimate, not a manufacturer specification — expect a few kWh of error either way.

Cost assumes home charging at the state's average residential electricity price (EIA, May 2026) and 12,000 miles a year. Public DC fast charging costs considerably more; time-of-use plans can cost less.

The petrol comparison uses the median combined MPG of current regular-gasoline, non-hybrid cars in this car's own EPA vehicle class — not an all-car average — priced at the U.S. average retail price from the EIA weekly series. It counts fuel only.