We ran the numbers between May 2023 and May 2024. Energy prices shifted wildly during that window. The goal was simple. Determine if switching to electric makes financial sense for long-distance travel.
Let’s look at the Tesla Model Y Propulsion. Official specs claim a WLTP consumption of 15.7 kWh/100 km. Real-world driving tells a different story. We tracked 30,000 kilometers. The average consumption settled at 20 kWh/100 km.
That is a 25% premium over the brochure numbers. Why does it burn more juice? Mostly highway driving. We kept to the speed limit. Constant velocity at high speeds kills efficiency.
The car’s dashboard lied slightly. It showed 17.8 kWh/100 km. But that metric is flawed. It ignores charging losses. It ignores parasitic drain when the car is off. To get the true cost, you must look at the wall outlet.
We injected exactly 6,000 kWh into the battery pack. That energy moved the car 30,000 kilometers. That is the hard data.
City drivers will fare better. Urban and peri-urban trips use less energy. You stay closer to the official claims. Weather matters too. Winter cold hits lithium-ion batteries hard. Range shrinks. Efficiency drops.
The dashboard number is not the bill you pay. The wall outlet determines your real cost per kilometer.
For those planning a switch, this gap between WLTP and reality is the hidden variable. It affects your budget. It affects your range anxiety. The Model Y is efficient. But it is not magic.
The math behind the Tesla Model Y ownership
The split is dead even. Half the miles come from fast charging. Superchargers and highway stations handle that load. The other half? Slow charging. Home or office. This isn’t a anomaly. It’s the standard profile for anyone with a home charger who also drives long distances.
Prices tell the real story. Tesla’s supercharging rates in France have dropped. They stabilized between 0.30 and 0.35 €/kWh across the country. That puts them in a strong position. Compare that to Ionity or Fastned. Those operators charge 0.59 €/kWh. It’s nearly double. The gap is widening.
Home charging changes everything. Use the EDF Tempo subscription. It drops the price to 0.11 €/kWh most of the time. That’s not a typo. It’s cheap. You can push your cost per kilometer below 2 €/100 km. No gas engine can match that. Not today.
Real-world cost analysis
Let’s run the numbers. Average out the mix. Say 0.40 €/kWh for fast charging. 0.15 €/kWh for slow charging. Drive 30,000 km. You spend 1,650 € on energy. That works out to 5.5 €/100 km.
Where does that leave you? It’s equivalent to burning 3 liters of gas per 100 km. At 1.80 €/liter. The Model Y sits in a comfortable spot against comparable internal combustion SUVs. ADEME stats back this up. The same budget gets you 30,000 km in electric. 13,000 km in gas. The difference is stark.
Optimize further. Rely on home charging. You can drop under 3 €/100 km. If you drive over 20,000 km a year, this advantage grows. It’s not just about buying the car. It’s about how you fuel it.
ROI and payback period
Look at the upfront cost. A gas-powered Peugeot 3008 costs less. The difference is 4,430 € in favor of the gas model. That’s a lot of money. But it doesn’t stay that way.
At standard charging rates, the Tesla breaks even after 80,000 km. Roughly three years of heavy use. If you maximize home charging, the payback hits at 60,000 km. That’s six years of average French driving. It makes the electric investment sensible.
Ignore maintenance. You’d be wrong. Teslas don’t need periodic service. No oil changes. No filters. No transmission fluid swaps. Gas cars need them. Over 80,000 km, those savings add up. They accelerate the payback period significantly.
The gap is closing. Electric cars have reached a maturity point. They are competitive. Long-term, the math favors electrons.
