Best OBD2 Gauge Display (2026): 5 Picks Compared

Compared on paper

Specifications are as stated on each listing, collected 24 October 2026.

How the points were given

Each gauge is scored on performance, build, value, safety and warranty. Performance covers data shown and fault code functions; build covers material and mounting; value covers the feature set for the class; safety covers stated certifications and alarm features; warranty covers a stated term. A spec the listing does not publish scores nothing. How we pick explains the weights.

Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.

What the listings tell you

Each display reads ECU data through the OBD2 port, and each lists alarms for speed, water temperature, voltage or RPM. GPS backup is stated for the MH P6 and the wiiyii P28. A warranty term is stated only for the Lufi X1, with a 1 year manufacturer term. Certifications are stated for the wiiyii P24, with CE, FCC and RoHS, and for the wiiyii P28, with SAE J1939. Compatibility is the sharpest difference: the XF lists year cutoffs by region, and the MH P6 lists excluded vehicle types and brands.

For a first gauge, match the car before the screen: check the year cutoffs and excluded types in the listing, and check whether the data the driver wants depends on a sensor the car may not have. The XF listing states this plainly: without the corresponding sensor, no data can be read.

Buying guide: the best obd2 gauge display for a home garage

OBD2 mode vs GPS mode

OBD2 mode reads ECU data such as speed, RPM, water temperature, voltage and turbo pressure. GPS mode gives positioning, speed, altitude and time from satellites, and works even where the OBD2 protocol is incompatible. The MH P6, the wiiyii P28 and the wiiyii P24 state GPS functions; the Lufi X1 and the Lufi XF are OBD2 only as stated.

Fault codes and alarms

Fault code reading and clearing is stated for the X1, the P24 and the MH P6, and fault code clearing is stated for the XF. Alarms vary: the XF uses pop-up windows and sound, the P28 uses an independent alarm light with pop-up prompts, and the MH P6 lets the driver set alarm limits for speed, temperature, voltage and RPM.

Display and mounting

Display options range from 10 interface options on the MH P6 to 13 themes on the P28 and custom combinations on the XF and X1. Mounting is stated for the P28 with a 360 split bracket, for the MH P6 with 2 install ways and an adjustable bracket, and for the XF with a base fixed by double-sided tape. The XF listing notes that no suction cup is included, since a suction cup can fall off with ambient temperature changes.

Compatibility first

Year cutoffs matter: the XF lists American cars after 2008 and Japanese and European cars after 2005, and notes that not all pure electric vehicles are compatible. The MH P6 lists OBDII/EOBD-compliant vehicles after 2008 and excludes diesel, hybrid, pickup truck, RV and modified cars, plus a list of brands. Where a listing gives no compatibility years, as with the P24, confirm fit before ordering.

Garage Fit Check

Check these points against the car and the dash before the first job:

• Space: the P28 measures 4.5 x 2.1 x 3.2 inches and the P24 measures 2.87 x 5 x 1.97 inches, so check dash space before ordering.
• Power: each display connects through the OBD2 port with an OBD2 cable; the P28 kit includes a Type-C OBD cable.
• Storage: the P28 kit includes a rotating bracket and an anti-slip mat; the MH P6 offers 2 install ways with an adjustable bracket.
• Before the first job: confirm the car year and brand against the listing compatibility notes, and confirm the sensors for the data the driver wants, since a missing sensor means no data.

FAQ: garage tools

What does an OBD2 gauge display show?

Speed, RPM, water temperature, voltage, fuel consumption and turbo pressure are stated across these listings, plus trip data such as drive time, altitude and driving mileage on the dual-system picks. The exact data set depends on the car sensors.

Will an OBD2 gauge display work with any car?

No. The XF lists American cars after 2008 and Japanese and European cars after 2005, and notes that not all pure electric vehicles are compatible. The MH P6 lists OBDII/EOBD-compliant vehicles after 2008 and excludes diesel, hybrid, pickup truck, RV and modified cars, plus named brands. Check the listing compatibility notes for the car in question.

Can an OBD2 gauge display clear fault codes?

Fault code reading and clearing is stated for the X1, the P24 and the MH P6, and fault code clearing is stated for the XF. The P28 listing does not state fault code clearing.

What is the difference between OBD2 mode and GPS mode?

OBD2 mode reads ECU data such as speed, RPM, water temperature and voltage. GPS mode gives positioning, speed, altitude and time from satellites, and works even where the OBD2 protocol is incompatible, as the MH P6 listing notes.

What alarms do these gauge displays include?

Speed, water temperature, voltage, RPM, turbo pressure and tilt alarms are stated across these listings, with forms ranging from pop-up windows and sound on the XF to an independent alarm light on the P28 and settable limits on the MH P6.

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