Tesla became the quickest growing car brand in California in the first quarter (+58% year-over-year) as the Model 3 outsold all of its direct competitors.

Hybrid and Electric Car Market Share in California (source: California New Car Dealers Association)
According to the California New Car Dealers Association, new car sales decreased in California to 487,741 (by 3.8%) for the fourth consecutive quarter.
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However, despite general sales (and even hybrid sales) shrinking, plug-in electric car sales are growing stronger. During the first three months of 2018, sales of electrified cars amounted to:
- Hybrids: 19,416 (4.0% market share)
- Plug-in hybrids: 13,534 (2.8% market share)
- All-electric: 13,657 (2.8% market share)
- Plug-ins total: 27,191 (5.6% market share)
Read Also - Tesla Production And Deliveries Graphed Through Q1 2018
Big gains noted by Tesla are a direct result of the Model 3 ramp-up. Moreover, Model 3 is the best-selling car in the Near Luxury segment, outselling the Mercedes C-Class and BMW 3-Series.
- Tesla Model 3 - 3,723
- Mercedes C-Class - 3,323
- BMW 3-Series - 3,260
Two other Tesla cars are within the top 5 of their segments and the Chevrolet Bolt EV lands itself in the top three in the Subcompact segment.

Top Selling Models in Each Segment - New Light Vehicle Registrations (YTD '18 thru March) (source: California New Car Dealers Association)
Source: California Auto Outlook - Q1'2018 - California New Car Dealers Association