Fraudsters Exploit Rising Fuel Prices with Fake Fuel-Saving Devices

Online scammers are currently taking advantage of persistently high petrol and diesel prices by promoting supposedly fuel-saving OBD2 devices to vehicle owners. These products are falsely marketed as solutions that can optimise engine performance and reduce fuel consumption, when in reality, they are ineffective and offer no real benefit.

Amidst global instability, such as ongoing conflicts impacting oil supplies, fuel costs have remained elevated. Fraudsters are capitalising on public concern over these high prices by sending out mass emails advertising plug-in devices that promise to reduce fuel usage by significant margins. The messages often claim that vehicle manufacturers deliberately calibrate engine control units conservatively, supposedly causing drivers to waste thousands of euros on excess fuel. Recipients are told that by using the advertised device, they could save anywhere from 35% to 55% on fuel consumption and recoup the purchase cost within a month.

Misleading Claims and Sales Tactics

The marketing for these OBD2 dongles describes them as compact chips that analyse real-time data from a vehicle's engine management system. According to the claims, the device automatically adjusts fuel injection, turbo boost, and ignition timing to fit individual driving styles, resulting in lower fuel consumption and a smoother driving experience. Instructions included in the spam suggest that the device calibrates itself within 30 seconds of being plugged in, learning and adapting as the car is driven.

To pressure potential buyers, scammers often assert that supplies are limited and that the devices are sold out in retail stores, available exclusively online. The relatively low price point--typically around 30 euros--may further entice consumers to make impulsive purchases.

Technical Reality and Risks

Upon closer inspection, several aspects of the scammers' claims do not add up. The purported fuel savings fluctuate between 35% and 55% within the same messages, raising immediate doubts. The suggestion that a universal device could adapt to the proprietary engine management parameters of various manufacturers and models is unfounded. In practice, the vehicle's calibration parameters are complex and differ widely between models. Any genuine alteration to these parameters would require in-depth knowledge of the specific vehicle's systems and could risk increased emissions, compromised performance, or even legal issues if emission standards are breached.

Independent assessments of these fuel-saving dongles have revealed that they are essentially non-functional. Hardware analysis and testing indicate that these devices do not communicate with the engine management system as claimed. Typically, they consist of simple circuitry that does little more than power LEDs when plugged in, with no real interaction with the car's diagnostic system. No evidence suggests any capacity to influence engine parameters or improve fuel efficiency.

No Shortcut to Fuel Savings

There is currently no legitimate, easy solution for dramatically reducing fuel consumption with a simple plug-in device. Drivers seeking to save on fuel are better advised to adopt proven strategies such as reducing unnecessary travel, using public transportation, cycling, or walking where possible. Adopting efficient driving habits and maintaining vehicles properly are the only credible means to manage fuel costs.

Consumers should remain vigilant against offers that seem too good to be true, especially those that exploit current economic or geopolitical situations. Any product promising significant fuel savings without substantiated evidence should be approached with skepticism.