My Tesla Model Y battery is losing charge quickly

The drop you're describing might not be as unusual as it seems - it really depends on what you actually mean by "several percentage points." Teslas always have a small standby drain because of the thermal management and battery monitoring systems, especially in summer when it's hot like now. If we're talking 5-10% a week that's already concerning, but if it's more like 2-3% it's pretty normal, believe it or not.

That said, two years is still under warranty (they usually cover 8 years on the battery), so it's worth getting it checked. Tesla has pretty precise degradation logs. Maybe first try checking your climate settings remotely - sometimes active preconditioning uses more power than you'd think. But if you notice the range has dropped drastically when you're actually driving it compared to the first year, then yeah, contact service directly.

I wouldn't advise ignoring the problem hoping it's normal, because two years is still within warranty in most cases and Tesla takes battery issues pretty seriously. That said, before contacting them check one thing: look in the app to see if there are any background processes running (software updates, thermal preconditioning, or surveillance systems) that could be draining the charge even when the car is parked. Sometimes people don't realize it but the car is actually "working" even when it's sitting still.

If after disabling everything you can control the drain remains significant (like more than 5-10% per week), then yeah it's worth taking a visit to Tesla techs. Bring them a report of the percentages you're losing, with precise dates if possible. The battery at two years should still be practically intact: there is some natural degradation, but it shouldn't show up this fast if you're using it normally.

Oh, and in the meantime try leaving the car in "Power Saving" mode or lower the preheating temperatures, so at least you reduce unnecessary consumption during the weeks you're not using it.

If the percentage really drops noticeably in seven days, it's worth checking your car's consumption log (in the energy section of the infotainment system) to figure out if it's the standby systems draining it or if something's off 🔋 Two years is well within warranty, so contact Tesla service with the data: it might just be some weird power consumption settings, but they could also find an actual battery issue that needs to be fixed.

Check the "Energy Consumption" section in your car's menu right away, because that's where you can see in black and white which systems are draining your battery while it's parked. It's often something you accidentally left running - seat heater, air conditioning, Sentry Mode - rather than an actual battery problem. The others already made a good point that you're still under warranty at two years, so don't waste time guessing.

If after checking the consumption you actually notice the drain is abnormal and doesn't come from anything you turned on yourself, contact Tesla directly for diagnostics. They have access to your battery data and can immediately see if there's premature degradation compared to normal timelines. A 2-3% loss per month in standby is considered normal, but if you're losing much more than that in a week then something's off and it's worth getting checked before the battery keeps draining.

First, check what you're actually reading. Many times the battery display isn't accurate if the car has been parked in the cold or if standby systems (climate preconditioning, sentry mode, data logging) are still active. Try turning off all non-essential functions in the settings and see if the drain slows down. As for natural degradation after two years, it really depends on how you've used it: frequent charges to 100%, extreme temperatures, or lots of charge-discharge cycles speed up cell deterioration.

That said, losing a few percentage points over a week of parking is more or less normal, especially if the car has sentry mode active (it drains the battery constantly). But if you're talking about a really substantial loss like 15-20% in seven days, then it'd be worth getting it checked at a service center. At two years you're still covered by the warranty for actual battery defects, so you've got nothing to lose by getting a diagnostic done. Tesla won't replace the battery just for normal degradation over time though - it has to be an actual defect.

The most practical advice: look at the "Energy" graph in the infotainment to see what your daily consumption is. If you see the car draining quite a bit even when it's off, it could be a module that's not working. If it's just a few decimals per day, everything's normal and there's no need to worry.

What you're describing might not actually be a real problem, depending on how you're measuring this drain. People often check the percentage sporadically and don't account for how much standby systems consume, remote climate control, background downloads. Two years is still young for a Tesla battery, and actual degradation over that period should be minimal.

But there's one thing the others haven't mentioned: before you take it in under warranty, actually check what's going on. Go into the Energy menu in the infotainment system and look at the detailed weekly consumption. If you see weird spikes at certain times or days when the car was parked, there could be a system that's not going into sleep mode properly, or the cellular modem drawing more power than it should. That's a scenario that happens every now and then and you usually fix it with a soft reset or a software update, without needing any physical work on the battery.

But if the log doesn't show any unusual consumption and the drain is really spread out across the whole week, then yeah, it's worth contacting Tesla. You're under warranty and they have the tools to do a real diagnostic of your battery's health, not just eyeballing it. Just don't make the trip to the dealership without having at least some idea of what you're seeing in your car's data, because that's exactly what they'll check first anyway.