ScanGauge SG2 OBD2 Vehicle Computer — Ultra-Compact 3-in-1 Fuel Economy & Diagnostic Monitor

The ScanGauge SG2 is a compact OBD2 vehicle computer that combines a diagnostic scanner, trip computer, and up to 37 customizable digital gauges for real-time fuel economy and engine monitoring.

The SG2 plugs into your car's 16-pin OBD2 port to give instant access to live engine data, fuel usage, cost-per-mile, and diagnostic trouble codes without complex installations or extra sensors. Its small footprint and simple five-button interface make it easy to mount and operate, while the high-contrast backlit display keeps information readable in bright daylight or at night. Designed for 1996-and-newer OBD2 vehicles—including gasoline, diesel, propane, and hybrid systems—the SG2 offers expandable gauge options so you can tailor the display to what matters most to your driving.

How does the SG2 help me monitor fuel economy in real time?

The SG2 calculates instant and average fuel economy using live engine parameters from your vehicle's computer, showing consumption and cost-per-mile on demand. You can switch between multiple economy readouts and set your fuel price to get accurate trip costing. This enables smarter driving choices and clearer tracking of fuel-related expenses.

• Instant MPG and average MPG readouts
• Customizable cost-per-mile using your fuel price
• Trip summaries with fuel usage and distance

Can I use the SG2 to diagnose check-engine lights and error codes?

Yes—ScanGauge reads Diagnostic Trouble Codes (DTCs) from the vehicle's ECU, displays code descriptions, and can clear codes and switch off the check-engine light when appropriate. It acts as a straightforward scan tool for basic diagnostics and code resets without needing a separate device or subscription. Keep in mind complex repairs still may require a mechanic.

• Reads and displays stored and pending DTCs
• Clears codes and can reset check-engine indicator
• Provides code descriptions to guide troubleshooting

What display customization and visibility options are available?

The SG2 offers 63 backlit color choices, adjustable brightness, and a high-contrast LCD so you can match the display to your dash and driving conditions. Four gauges can be shown simultaneously depending on vehicle sensor availability, and additional gauges can be added using the Expandable Add-A-Gauge feature. The compact housing and clear numerals make it useful for quick glances while driving.

• 63 backlit color settings and brightness control
• High-contrast LCD with readable large numerals
• Expandable to monitor up to 37 gauges total (vehicle dependent)

How easy is installation and daily use?

Installation is plug-and-play: no batteries and no separate power lead—just connect to the OBD2 port under the dash. The five-button interface is designed for quick navigation between diagnostics, trip functions, and live gauges. Mounts and wiring are compact, so the unit stays out of the way while delivering constant vehicle data.

• Single plug into the 16-pin OBD2 connector—no batteries required
• Simple five-button navigation for fast access
• Small footprint fits discreetly on the dash or console

Who is this for? Drivers who want immediate, detailed feedback about their vehicle’s performance and fuel costs will value the ScanGauge SG2. It’s ideal for daily commuters tracking fuel expenses, fleet drivers needing consistent trip data, DIYers who want basic diagnostic capability, and owners of older OBD2 vehicles who prefer a dedicated, compact monitor instead of phone apps or bulky scanners. If you need quick diagnostics, live fuel economy, and a highly configurable display in a small package, the SG2 is built for that purpose.