Will I make it?

How Will I Make It works

Most range numbers come from one place: the EPA label. That number assumes a mix of city and highway driving on flat ground in mild weather. A real road trip is none of those things. It has mountain passes, 75 mph interstates, a 15°F morning, a headwind across the plains and a cabin heater running for three hours.

Will I Make It drives your exact route before you do. We pull the real road route and break it into 30-meter steps. For every step we model five things: your speed on that stretch, the climb or descent, the outside temperature from the National Weather Service forecast, the wind, and the energy your cabin heat or air conditioning draws. Each car is calibrated to its own EPA highway rating, so a flat 70°F drive at 60 mph matches the label within 2%. Everything a real trip adds on top of that is what we measure.

You get one of three answers:

• Yes. Even on the tougher version of the day, you arrive above your safety buffer (10% by default).
• Close. The most likely result clears your buffer, but a colder morning or a stronger wind could push you under it.
• No. You run out of charge or arrive below your buffer. We show you the exact mile where it happens.

Every answer also shows a range (for example, "arrive with 22–32%, most likely 28%") and the single biggest drain on that trip, such as "Eisenhower Tunnel climb uses 16%." If you check trips over time, we learn how your driving compares to the model and tighten the range for you.

What really changes your EV's range on a road trip

Cold weather

Cold is the largest single factor most drivers face. In winter testing by the Canadian Automobile Association at 5°F to 19°F, EVs lost between 14% and 39% of their rated range. Two things cause it. A cold battery delivers less of its stored energy and accepts charge more slowly. And heating the cabin takes real power, especially in cars with resistive heaters instead of heat pumps.

Will I Make It applies a cold-battery adjustment below 50°F and models cabin heat from the hourly forecast along your route, not just the temperature where you start. A trip that leaves Denver at 40°F and crosses a pass at 15°F is modeled at 15°F where it matters.

Highway speed

Air resistance rises with the square of speed, so the last 10 mph cost far more than the first. Geotab's analysis of 350,000 sedan trips, normalized to a 65 kWh battery, found range of about 277 miles at 50 mph, 251 miles at 60 mph, 226 miles at 70 mph and 200 miles at 80 mph. Driving 80 instead of 70 cost about 26 miles.

We use typical real-world road speeds for each segment, not posted limits. If you drive faster or slower than traffic, adjust your speed setting by up to 10 mph either way and the answer updates.

Elevation

Climbing a mountain pass takes a lot of energy. Coming down returns some of it through regenerative braking, but not all of it. We model about 60% recovery on descents. That is why mountain trips often look worse in one direction than the other. Denver sits at 5,280 feet. The Eisenhower Tunnel on I-70 is above 11,000 feet. That climb is the biggest single drain on a Denver to Vail trip in almost every car.

Wind

A 15 mph headwind on an open interstate behaves like driving 15 mph faster. A tailwind helps by the same logic. We use the forecast wind along your route and its angle to your direction of travel.

Cabin heat and air conditioning

Heat costs more than cooling. On a cold day, a resistive heater can draw several kilowatts for the whole trip. Heat pumps cut that sharply, and the model knows which cars have one. In summer, air conditioning matters most at low speeds and in traffic, where it makes up a larger share of total energy use.

Cargo, roof boxes and towing

A loaded roof box can raise highway energy use noticeably because it adds drag, not just weight. Towing a trailer can cut range by a third to half. Will I Make It does not yet model towing or roof boxes. If you tow, treat any "Close" as a "No" and plan a stop.

Real trips, real answers

Denver to Vail in a Tesla Model Y Long Range

The same car on the same road arrives with about 14 points less battery in January. That gap is the most important number for anyone driving to the mountains in winter.

Edwards to Moab in a Ford Mustang Mach-E Extended Range

The fix is one stop. Will I Make It suggests the best charger along the way, ranked by whether it is working right now, how long you need to charge to finish the trip with your buffer, and a backup charger nearby.

Try your own car on these trips, or browse the most popular routes below.

Planning charging stops that actually work

A charger on a map is not a charger that works. In J.D. Power's 2025 public charging study, 14% of public charging visits ended without a charge, down from 19% in 2024. Better, but on a long trip it means roughly one stop in seven can fail.

Three habits make road trips predictable:

1. Charge from about 10% to about 80%. Fast charging is quickest at low and middle charge levels and slows sharply above 80%. Two short stops are often faster than one long one.
2. Pick chargers by whether they are working now, not just whether they exist. ChargingNear.me ranks chargers with a Working-Now Score built from live status, recent driver check-ins and how fresh the data is.
3. Always know your backup. Every suggested stop on All-Access comes with a second charger within 15 miles, so a broken stall never strands you.

Your safety buffer matters too. We default to arriving with 10%. On remote routes, in winter or at night, raise it to 15% or 20%.

Thinking about buying an EV? Test it on your own life first

The most common question from people shopping for an EV is not "how far does it go?" It is "will it handle the trips I actually take?" Will I Make It answers that without owning the car.

Pick any model from the list, even one you are only considering. Enter the trips that matter to you: your commute, the drive to your family, your ski weekend, your summer road trip. You will see the answer on a January day and on a July day, side by side. Compare two or three cars on the same trip and the differences in battery size, efficiency and heat pumps show up immediately.

Questions worth checking before you buy:

• Does my longest regular trip work in January without a stop?
• How much battery would I have left after my commute in the coldest week of the year?
• If I need a stop, are there fast chargers with my plug type on that route?
• Does this car use the NACS (Tesla) plug, or will I need an adapter for Superchargers?

Compare cars on this trip

Tesla Superchargers and the NACS plug

Most automakers selling EVs in the U.S. have moved to the North American Charging Standard (NACS), the plug Tesla designed. Many non-Tesla EVs can now use a large share of Tesla Superchargers, either with a built-in NACS port or an adapter. When you pick your car, Will I Make It knows its plug type and only suggests chargers you can actually use. ChargingNear.me lists 95,870 public stations, including 17,047 fast chargers, with CCS, NACS and CHAdeMO plugs.

Glossary

Range

How far your EV can drive on its current charge in today's conditions.

EPA range

The official rated range on the window sticker, measured in standardized lab tests.

kWh (kilowatt-hour)

The unit of energy stored in your battery. A 78 kWh battery at 80% holds about 62 kWh.

kWh per mile

How much energy your car uses per mile. Lower is better. Most EVs use between 0.25 and 0.40 kWh per mile on the highway.

Regenerative braking

Recovering energy when slowing down or going downhill.

DC fast charging

High-power public charging that can add hundreds of miles in under an hour.

Level 2 charging

Slower AC charging, common at homes, hotels and workplaces.

NACS

North American Charging Standard, the Tesla-designed plug now used by most automakers.

CCS

Combined Charging System, the fast-charging plug most non-Tesla EVs sold before 2025 use.

Safety buffer

The minimum charge you want left when you arrive.

Working-Now Score

ChargingNear.me's rating of how likely a charger is to work right now.

Frequently asked questions