In Q4'25, TSLA's total revenue reached $24.4B USD, with Automotive sales contributing the largest share at $16.8B USD, followed by Energy generation and storage sales at $3.7B USD and Services and other at $3.4B USD, while smaller segments like Automotive regulatory credits ($542M USD) and leasing ($516M USD) provided supplementary income. From Q1'23 to Q4'25, Automotive sales exhibited volatility, peaking at $20.6B USD in Q4'23 before declining to a low of $12.9B USD in Q1'25 and recovering to $20.4B USD in Q3'25, underscoring its dominance in overall revenue (typically 70-80% of total). Energy generation and storage sales showed consistent growth from $1.4B USD to $3.7B USD, reflecting expanding demand, while Services and other steadily increased from $1.8B USD to $3.4B USD; regulatory credits and leasing remained minor and stable, with credits fluctuating between $282M USD and $890M USD. This segment distribution highlights TSLA's diversification beyond core automotive sales amid fluctuating market conditions. **Total Revenue Trend (Stacked):** The chart displays a generally stable to slightly upward trajectory in total quarterly revenue, from $21.9B USD in Q1'23 to $24.4B USD in Q4'25, with notable dips in Q1'24 ($17.7B USD) and Q1'25 ($16.5B USD) offset by peaks in Q2'24 ($22.8B USD) and Q3'25 ($27.3B USD), indicating resilience driven by non-automotive growth.