Captive banks soften diesel risk pricing, independent banks tighten
A new ECB working paper reveals that captive and independent banks respond differently to environmental shocks affecting diesel vehicles. Captive lenders tend to weaken the effectiveness of environmental regulation, while independent banks reinforce it by adjusting credit terms.
Lender incentives shape credit terms
An ECB working paper examines how captive and independent banks adjust auto loan conditions in response to environmental shocks.
The study uses two quasi-natural experiments: the 2015 Dieselgate scandal and the introduction of low-emission zones.
Captive lenders, financial subsidiaries of car manufacturers, are found to reduce interest rates by 12-30 basis points and increase loan-to-value ratios by 3.5 percentage points for diesel vehicles after Dieselgate, especially for their own brands.
This suggests they use favorable financing to support vehicle sales and resale values.
Conversely, independent banks respond strongly to regulatory shocks from low-emission zones, increasing loan rates for diesel vehicles in affected areas.
This behavior is consistent with independent banks pricing increased regulatory and collateral risk.
The analysis uses a comprehensive dataset of car loans for used vehicle purchases from France, Germany, Italy, and Spain between 2008 and 2018.
Vertical integration shapes policy impact
Governments and authorities have adopted stringent policies to reduce pollution, targeting the transportation sector and diesel vehicles.
Regulatory measures, such as tighter emission standards and local circulation restrictions, aim to internalize environmental externalities by increasing the private costs of owning high-emission cars.
The financial sector plays a key role in transmitting these policies, as credit conditions can either reinforce or weaken environmental regulation.
This paper specifically examines how lenders' organizational structure and incentives shape credit supply responses.
Captive lenders, financial subsidiaries of car manufacturers, have incentives to support their parent companies' profitability.
Independent banks, however, focus solely on credit risk without strategic interest in specific car brands.
This distinction allows the study to identify how vertical integration between production and finance affects the transmission of environmental and regulatory shocks through credit markets.
The empirical strategy relies on difference-in-differences designs with a dense set of fixed effects, comparing loan terms for diesel and petrol vehicles that are otherwise highly similar.
Policy dampened by incentives
The study critically demonstrates how financial incentives can undermine environmental policy objectives, particularly through vertical integration in the auto industry.
Captive banks' actions effectively subsidize polluting vehicles, creating a significant loophole in regulatory efforts to internalize environmental costs.
This mechanism underscores the complex interplay between financial structures and broader societal goals, demanding closer scrutiny from policymakers.