Volkswagen
Volkswagen Dieselgate Emissions Scandal
Estimated impact: $33B
Volkswagen installed "defeat device" software in 11 million diesel vehicles worldwide to cheat on emissions tests. The cars emitted up to 40 times the legal limit of nitrogen oxides during real driving. The scheme was driven by engineering leadership's commitment to meeting impossible performance targets set by senior management.
Decision context
Whether to install software that detected and altered vehicle behavior during emissions testing, or to admit that clean diesel technology could not simultaneously meet performance, fuel economy, and emissions targets.
Decision anatomy
Red = risk factor present · Green = protective factor present
The analysis below was produced from the pre-decision document only. No hindsight. This is what the platform would have surfaced if it had been running in 2006.
“Volkswagen Group committed to an 'American Diesel Offensive' to capture the US clean-diesel market with the EA189 and later EA288 engines. Engineering teams informed management that the technical combination of high power, fuel economy, and Tier 2 Bin 5 NOx compliance could not be achieved with the available urea-tank packaging. Senior engineering leadership instructed the team to 'find a solution' rather than revise the performance-or-emissions tradeoff upward in management reporting.”
Source: VW internal engineering briefings (cited in Jones Day internal investigation summary); US DOJ Statement of Facts, U.S. v. Volkswagen AG
Red flags detectable at decision time
- Performance + fuel-economy + emissions targets explicitly described as technically unachievable by engineering teams
- Clear chain-of-command pressure to 'find a solution' after escalation — rather than a target revision
- No whistleblower protection channel — engineers raising concerns faced career risk
- Culture of fear under CEO Martin Winterkorn documented by multiple former executives
- Defeat-device technology well-known in automotive-engineering community as a dead-end compliance path
Cognitive biases the platform would have flagged
Hypothetical analysis
DI would flag the 'find a solution' instruction as the canonical moment where a decision process should have required either a technical feasibility study or a target revision. Instead, VW's culture of authority bias under Winterkorn meant engineers treated the impossible target as the constraint and the compliance path as the variable. The DQI framework would have identified the no-dissent engineering culture as a bright-line process risk incompatible with regulatory compliance.
Biases present in the decision
★ Primary driver · Severity estimated from bias type and decision outcome
Toxic combinations
Reference class base rates
Across all 143 curated case studies in our library:
Lessons learned
- When senior leadership sets technically impossible targets, a culture of authority bias forces engineers to find illegitimate workarounds.
- Groupthink in engineering teams can normalize fraud when "everyone knows" about the deception but no one escalates.
- Sunk cost in the "clean diesel" marketing strategy made admitting technical failure seem more costly than cheating.
Source: EPA Notice of Violation to VW (2015); German Bundestag Investigation Committee Report (2017) (Case Study)
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Workflows that fire on decisions like Volkswagen’s
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