Radar · Auto in San Diego
Best Auto Companies in San Diego, United States
The 36 best Auto companies in San Diego, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Achates Power.
By Rohit KhannaTrends & Stories
36companies tracked
$126.7Mdisclosed funding
0unicorns
3have raised
FLIAR INTELLIGENCE · AUTO × SAN DIEGO
Our analysis of 50 Auto companies
$9.4b in tracked funding; 94% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
50companies analysed
94%cloud-native stacks
2025funding peak (by rounds)
4unicorns
2015median founding year
Ranked: Best Auto companies in San Diego
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Achates Power Manufacturer of engine for vehicles | $108M | 90 mo ago | Series D | — | 2004 | WordPressMySQLPHP+26 | 540 patents Advanced opposed‑piston internal combustion engine technologies, including hydrogen fuel, bearings, and spray systems. | — |
| 2 | Buy Auto Parts Online retailer of auto parts & accessories | $19M | 151 mo ago | Late Stage | — | 2001 | SentrySearchspringAnimate.css+34 | — | — |
| 3 | Clean Air Power Manufacturer and supplier of automotive filtration components | $553K | 167 mo ago | Late Stage | Dan Skelton CEO & President | 1991 | — | — | — |
| 4 | AEM Manufacturer of surface mount fuses, inductors, varistors, and multilayer ceramic capacitors | — | — | Unfunded | Daniel Hai Ming Chang CEO & President | 1986 | BootstrapYouTubeVarnish+10 | — | — |
| 5 | all star glass Provider of vehicle auto glass replacement and repair services | — | — | Acquired | Sam Scharaga Founder | 1977 | — | — | — |
| 6 | All Star Glass Provider of vehicle auto glass replacement and repair services | — | — | Acquired | Sam Scharaga Founder | 1977 | — | — | — |
| 7 | ATLAS Throttle Lock Universal motorcycle cruise control alternative for comfortable adventure touring | — | — | Unfunded | David Winters Founder | 2013 | — | — | — |
| 8 | AutoAnything Online retailer of auto parts & accessories | — | — | Acquired | — | 1979 | — | — | — |
Top 3 Auto companies in San Diego
#1
Series D · San Diego, California · founded 2004 · 41 employees$107.5Mraised▾
Series D · San Diego, California · founded 2004 · 41 employees
Manufacturer of engine for vehicles
Funding rounds
- Mar 2019Grant (prize money)$2M
- Oct 2017Series D$29.8M
- Dec 2015Grant (prize money)$9M
- Mar 2015Grant (prize money)$14M
Investors
Sequoia Capital, RockPort Capital, InterWest Partners, Triangle Peak Partners, OGCI, Climate Investment
Tech stack
BootstrapConstant ContactFancyboxFlickityFont AwesomeGoogle Analytics
#2
Late Stage · San Diego, California · founded 2001 · 22 employees$18.6Mraised▾
Late Stage · San Diego, California · founded 2001 · 22 employees
BuyAutoParts is an online retailer that offers a variety of auto parts, car parts, truck parts, import parts, performance parts, and automotive accessories. It sells auto parts at wholesale prices, which come with a full warranty. The order can be placed via the platform.
Funding rounds
- Jan 2014PE$18.6M
Investors
Gladstone Capital, Gladstone Investment
Tech stack
AffirmAmazon AlbAmazon Web ServicesAngularjsAnimate.CssBootstrap
#3
Late Stage · San Diego, California · founded 1991 · 14 employees$553Kraised▾
Late Stage · San Diego, California · founded 1991 · 14 employees
Manufacturer and supplier of automotive filtration components
Funding rounds
- Oct 2012PE—
- PE—
- Grant (prize money)$553K
Founders & team
Investors
Parkwalk, RBC Capital Markets, EnerTech Capital, Endeavour
Tech stack
PhpCodeigniterBootstrapOwl CarouselJsdelivrJquery
Funding & investor landscape
$126.7Mtotal disclosed funding
3companies funded
10disclosed rounds
0rounds last 90 days
Most active investors
Prism market signals · United States · country-scoped Prism corpus, 5,477,462 docs
Market landscape — 10 sub-themes by coverage
Share of Auto coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
RESEARCH SIGNALS · United States
How research on Autonomous Vehicles is moving in the United States
A read on the academic research around Autonomous Vehicles — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 3,252 United States-affiliated papers.
research sentiment over time
200820172026
enthusiastic · positive · guarded tone
Tone is overwhelmingly optimistic and intensifying — the enthusiastic (strongly-positive) share moved 24% → 50% across 2008–2026.
top research entities
- Carnegie Mellon University89
- Purdue University West Lafayette76
- University of California, Berkeley69
- Northeastern University64
- Stanford University55
leading researchers
Anez, Diomar · Anez, Dimar · Sharareh Kermanshachi · John M. Dolan · Masayoshi Tomizuka · Freederia AI Researcher · Weisong Shi · Apurva Pamidimukkala
▲
Breakthroughs1,031 · 32%
▲ 28%→31% share
▲1.1× share momentum2 median citations80% since 2021mostly methods-led
Breakthroughs are rising (28%→31% of field), led by Computer vision.
rising sub-themes (early→recent)
- Computer vision12→111
- Human–computer interaction2→64
- Perception2→59
- Robustness (evolution)3→53
- Trajectory12→61
Newly emergingReinforcement learning 0→70 · Context (archaeology) 0→30 · Adversarial system 0→27
Landmark Are we ready for autonomous driving? The KITTI vision benchmark suite · 14,099 cites
◆
Advancements942 · 29%
▼ 37%→28% share
▼0.8× share momentum2 median citations77% since 2021mostly methods-led
Advancements are cooling (37%→28% of field), led by Human–computer interaction.
rising sub-themes (early→recent)
- Human–computer interaction3→65
- Transport engineering11→66
- Computer vision2→54
- Reinforcement learning3→46
- Automotive engineering5→48
Newly emergingObject detection 0→22 · Object (grammar) 0→17 · Vehicle safety 0→14
Landmark Autonomous driving in urban environments: Boss and the Urban Challenge · 1,488 cites
▼
Concerns727 · 22%
▲ 19%→23% share
▲1.2× share momentum0 median citations82% since 2021mostly empirical
Concerns are rising (19%→23% of field), led by Humanities.
rising sub-themes (early→recent)
- Humanities4→108
- Philosophy1→64
- Context (archaeology)1→54
- Computer security2→48
- Transport engineering4→30
Newly emergingPerception 0→24 · Computer vision 0→13 · Metadata 0→12
Landmark The social dilemma of autonomous vehicles · 1,445 cites
RESEARCH HOTSPOTS · United States
Where autonomous vehicles is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
SF Bay Area154 · +0.50
Boston134 · +0.58
Ann Arbor124 · +0.52
Pittsburgh100 · +0.63
New York76 · +0.39
Atlanta50 · +0.39
Los Angeles45 · +0.43
Austin39 · +0.45
San Diego33 · +0.42
Chicago32 · +0.32
PATENT SIGNAL · United States
Who's filing autonomous vehicles patents in the United States
United States autonomous vehicles patent filing is accelerating — 19,294 filings from 4,355 assignees (2016–2025), led by Waymo, Baidu USA, GM Cruise Holdings; annual filings 885→1348.
19,294 filings4,355 assigneespeak 2424/yr2016–2025
filing momentum (YoY 2016–2025)
top patent filers
- Waymo1688
- Baidu USA1034
- GM Cruise Holdings767
- FORD Global TECH589
- Qualcomm565
- Tusimple547
- UBER Technologies527
- UATC507
Common questions
How many Auto companies are there in San Diego, United States?
Radar tracks 36 indexable Auto companies headquartered in San Diego, United States that meet our profile-completeness bar.
What is the total funding raised by Auto companies in San Diego, United States?
The Auto companies in San Diego, United States on this list have raised a combined $126.7M in disclosed equity funding across 3 funded companies.
Which is the highest-funded Auto company in San Diego, United States?
Achates Power is the highest-funded Auto company in San Diego, United States, with $107.5M in disclosed equity funding.
How many Auto companies in San Diego, United States are funded?
3 of the 36 Auto companies in San Diego, United States on this list have disclosed at least one equity funding round.
How many Auto unicorns are there in San Diego, United States?
None of the Auto companies in San Diego, United States on this list currently has a disclosed valuation of $1B or more.
Who are the top investors in San Diego, United States Auto companies?
The most active investors in San Diego, United States Auto companies on this list include Ajax Strategies, Aramco Ventures, Climate Investment, Cornell Venture Capital, DOE.
Rohit KhannaTrends & Stories
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.