Dashi v. Nissan N. Am., Inc., 445 P.3d 13

Background

In April 2015 a 2008 Nissan Rogue rear-ended a vehicle performing an illegal U-turn; plaintiff Antea Dashi suffered serious head injuries and sued Nissan for product design defect and negligence, alleging absence of Forward Collision Warning (FCW) and Crash Imminent Braking (CIB) AEB features.
Nissan moved for summary judgment arguing Arizona tort claims are impliedly preempted by federal law because NHTSA declined to set formal AEB equipment standards for light vehicles.
NHTSA has long researched and promoted AEB technologies (including via NCAP, guidance, industry negotiations, and outreach) but in Jan. 2017 denied a petition to promulgate mandatory AEB standards for light vehicles, preferring non-rulemaking tools to preserve flexibility and foster innovation.
The superior court granted summary judgment for Nissan on preemption grounds; the appellate court reviews de novo and Nissan bears the burden to prove preemption.
The court analyzed implied conflict preemption—specifically obstacle preemption—focusing on whether NHTSA’s choice to preserve manufacturer options is a deliberate regulatory objective that a state tort verdict would obstruct.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Arizona common-law design-defect and negligence claims are impliedly preempted by federal law	Dashi: State tort claims do not conflict with federal objectives; AEB sufficiently mature and not preempted	Nissan: NHTSA’s deliberate refusal to set a single AEB standard preserves manufacturer choice to further federal safety objectives; state-imposed duty to install FCW/CIB would conflict	Held: Preempted — state claims would obstruct NHTSA’s regulatory objectives and preserved manufacturer choice
Whether informal agency action/denial of rulemaking can trigger obstacle preemption	Dashi: Only formal rules should trigger preemption; guidance irrelevant	Nissan: Agency explanations, guidance, and denial of rulemaking reflect deliberate federal policy choices	Held: Agency non‑rulemaking posture and denial can trigger obstacle preemption when motivated by policy objectives
Whether Sprietsma/Williamson or other precedents bar preemption here	Dashi: Sprietsma/Williamson show no preemption where agency did not deliberately preserve choice	Nissan: Those cases support preemption where agency preserved choice as a means to an end (like Geier)	Held: Geier-like rule applies; NHTSA preserved choice to promote innovation, so Sprietsma/Williamson do not prevent preemption here
Whether preemption would immunize industry from liability	Dashi: Preemption would create broad immunity for manufacturers	Nissan: Preemption limited to claims seeking to force a different equipment choice; claims that a chosen device is defective remain viable	Held: Preemption limited; manufacturers remain liable for defective implementation but not for tort claims that would effectively impose a conflicting equipment standard

Key Cases Cited

Geier v. American Honda Motor Co., 529 U.S. 861 (agency-preserved manufacturer choice can produce obstacle preemption)
Williamson v. Mazda Motor of Am., Inc., 562 U.S. 323 (distinguishes when preserved choice is a deliberate federal objective versus a byproduct of a minimum standard)
Sprietsma v. Mercury Marine, 537 U.S. 51 (agency refusal to regulate does not always imply preemption absent a purpose to preserve choice)
Cipollone v. Liggett Group, Inc., 505 U.S. 504 (presumption against preemption; congressional intent controls)
Wyeth v. Levine, 555 U.S. 555 (saving clause and limits on preemption)
Hines v. Davidowitz, 312 U.S. 52 (classic formulation of obstacle preemption)
Crosby v. Nat'l Foreign Trade Council, 530 U.S. 363 (state action that undermines federal bargaining objectives can be preempted)
Medtronic, Inc. v. Lohr, 518 U.S. 470 (limits on preemption and relevance to pre-Geier authority)