只有電池保8年, 其他的地方和傳統車廠一樣4年5萬miles. 一直換車的只有比較有閒錢的人. 大部分的一般民眾平均是8年換一次車. Lease的人換車快, 但是tesla不把lease的退稅轉嫁給租車的人, 其他的車廠都會. 所以換車快很難發生在tesla美國車主上
(例:用最簡單的算法, 現代ioniq 5 5萬, 3年折價50% 2萬5. 所以租3年就(2萬5 - 7500) / 36 = ~500塊一個月, 但是30個月的時候車廠會說你現在來換新車就剩下的不用付了)

tesla model 3 最低價3萬8, 沒有2萬8的, 美國政府可以退稅7500, 但是先前要你有繳超過7500的稅
你在網頁上看到2萬8的是 after probable saving,

Vehicle Price $38,990
Federal Tax Credit1 -$7,500
Est. 3-year gas savings -$3,000
Trade-in Value Get an Estimate
Price after probable savings $28,490
Destination fee $1,390
Taxes and fees listed are estimates only, subject to change, and may not be accurate to you, depending on factors like your registration location. Your applicable taxes and fees will be confirmed for you closer to time of delivery.
1
Customers who take delivery of a qualified new Tesla and meet all federal requirements are eligible for a tax credit up to $7,500. Tax credit will reduce to $3,750 for Model 3 Rear-Wheel Drive and Model 3 Long Range on Jan 1, 2024. Take delivery by Dec 31 for full tax credit. Only for eligible cash or loan purchases.
Adjusted Gross Income Limitations
$300,000 for married couples filing jointly
$225,000 for heads of households
$150,000 for all other filers
Price Caps
The vehicle MSRP at time of delivery must not exceed the following caps. This price includes optional equipment physically attached to the vehicle at the time of delivery and excludes software features, accessories, taxes and fees.
Model 3: $55,000
Model Y: $80,000
Model X: $80,000
Learn More
Your eligibility for any tax credits depends on your personal tax situation. We recommend speaking with a tax professional for guidance.