Here is the comparison post about three hot-selling mileage correction tools in the market:
Godiag ODOMaster 7 inch tablet, OBDSTAR ODOMaster and OBDSTAR X300M.
1.Godiag GD801 ODOMaster:
- Function: Odometer adjustment (Read/write KM+ EEPROM+ Flash) + OBDII Diagnosis+ Oil Service Reset
- Language: English, French, German, Spanish, Russian, Italian, Portuguese, Polish
- Update: Support One Key Upgrade; One Year Free Update Online, after one year update cost $149.
- Vehicle coverage:
Mileage Correction Highlights:
FORD F150 2019 /EDGE 2020 SPC5604+2432 /EXPLORER 2017
BUICK REGAL 2017- /VELITE 5 2017
CHEVROLET SUBURBAN 2017- /TRAILBLAZER 2019 A8
SUZUKI SWIFT 2017- 70F35XX COLOR VDO /SWIFT 2018- 70F35XX MONOCHROME VDO
NISSAN TEANA 2019
For the complete car list, Check Godiag GD801 support list
2.OBDSTAR ODOMASTER Full Version:
- Function: Odometer adjustment (Read/write KM+ EEPROM+ Flash) + OBDII Diagnosis+ Oil Service Reset
- Language: English, Italian, Russian, German, Spanish, Polish, French, Portuguese
- Update: support free update online for one year, no need tokens. After that software subscription is 199USD/year.
- Vehicle coverage:
Supports mileage adjustment for 2021 Jeep Grand Cherokee by OBDII with FCA 12+ 8 Universal Adapter
Supports following newer models via OBDII
Toyota Camry 2018 via OBDII
Jeep Cherokee 2019 via OBDII
Dodge Charger 2019 via OBDII
Ram 2018- / 300C 2018- / Pacifica 2018- / Durango 2018- / Compass 2018-/ Challenger 2018- /Renegade 2018- / Grand Cherokee 2018- via OBDII
Ford F250 2017- 2018 / F350 2018 / F450 2018 / F550 2018 / Fusion 2013
Chevrolet Colorado Hour 2017- / Colorado 2018 / Corvette 2017
GM Cadillac 2017- CT6/ 2017- XT4 via OBDII
Ferrari California T 2014-
Nissan Kicks 2016/2017- Block ABS via OBDII
Nissan Kicks 2016/2017- Unlock Dash via OBDIIst
3.OBDSTAR X300 M:
- Function: Odometer adjustment (Read/write KM+ EEPROM) + OBDII Diagnosis
- Language: English
- Update: Upgrade via TF card. No more updates now.
- Vehicle coverage:
Gets better Mileage Correction on the latest cars. Tested well on 2018 Seat with smart key, 2017 T6 with AdBlue, 67reg Q3, 2017 Sportage, 2017 Mondeo, 2017 Corsa & 2016 Focus RS all no problem {need a do trick on smart key} all done simple plugin OBD. BRILLIANT UNIVERSAL MAKES FOR 2008-2018.
Comparison table: GODIAG ODOMASTER vs. OBDSTAR ODOMASTER vs. X300M
| Function | GODIAG GD801 ODOMASTER | OBDSTAR ODO MASTER | OBDSTAR X300M |
| Image |  |  |  |
| Price | $499 | $799 | $205 |
| Software function | |||
| Read Odometer | √ | √ | √ |
| Write Odometer | √ | √ | √ |
| Read Flash | √ | √ | x |
| Write Flash | √ | √ | x |
| Read EEPROM | √ | √ | √ |
| Write EEPROM | √ | √ | √ |
| OBDII Diagnosis | √ | √ | √ |
| Oil Service Reset | √ | √ | x |
| Wide Vehicle Coverage | √(Do not support Bentley, Alfa, Ferrari, Maserati) | √ (Do not work on Honda) | √ |
| One-Click Upgrade | √ | √ | x |
| Software update | Free Update Online for One Year | Free Update Online for One Year, No Need Tokens | No more update |
| Language | English, French, German, Spanish, Russian, Italian, Portuguese, Polish | English, Italian, Russian, German, Spanish, Polish, French, Portuguese (English in default. Provide SN to change language. User can change language once only). | English |
| (Default English, for the other language, | |||
| please submit the serial number to the dealer) | |||
| Specification | |||
| Operation System | Android5.1.1 | Android5.1.1 | Linux |
| Camera | supported | supported | Not support |
| CPU | RK3128 Quad-core, ARM Cortex A7@1.2Ghz | RK3128 Quad-Core ARM Cortex A7 @1.2Ghz | / |
| Battery | 3800mA, rechargeable polymer lithium battery | 2600mA, rechargeable polymer lithium battery | / |
| Extension Memory Card | 32G Micro SD (TF) card supported | 32G Micro SD (TF) card supported | / |
| Storage Capacity | 16GB | 16GB | 8GB |
| LCD | 7 inch | 5 inch | 160MM |
| LCD resolution | 800*480 | 800*600 | 160*160 |
| Touch screen | capacitive touch screen | capacitive touch screen | / |
| Wi-Fi | supported | supported | Not support |
| Weight | about 850g | about 700g | about 850kg |
| Some vehicle coverage comparison | GODIAGODOMASTER | Odo Master | X300M | |
| FORD | FIESTA | 2017- | 2017- | 2013- |
| FOCUS | 2019 | 2019 | 2013- | |
| TRANSIT | 2018- | √ | × | |
| KA | 2018- | 2018- | 2015- | |
| GM | COLORADO | 2018- | 2018- | 2005- |
| CRUZE | 2017- | 2017- | 2010- | |
| ESCALADE | 2018 | 2018- | 2015- | |
| XT6 | 2021 | 2019 | / | |
| YUKON | 2017- | 2017- | 2014- | |
| CHRYSLER | CHEROKEE | 2018- | 2018- | 2015 |
| RAM | 2018- | 2018- | 2011- | |
| DURANGO | 2018- | 2018- | 2014- | |
| LANDROVER | DISCOVERY 4 | 2015- | 2015- | / |
| RANGE ROVER SPORT | 2017- | 2017- | 2014 | |
| VW | MQB 2012-2014.06 | √ | √ | × |
| MQB 2014.06- | √ | √ | √ | |
| RENAULT | CAPTUR | 2017- | 2017- | / |
| TRAFIC IV | 2017- | 2017- | / | |
| KIA CEED | 24C16 | √ | √ | √ |
| D70F3423 | √ | √ | √ | |
| D70F3XXX | √ | √ | × | |
| D70F3421 | √ | √ | × | |
| D70F35XX | √ | √ | × | |
| NEC | √ | √ | × | |
| NEC+24C16 | √ | √ | × | |
| KIA Optima | 24C16 | √ | √ | √ |
| D70F3536 | √ | √ | √ | |
| D70F3421 | √ | √ | × | |
| D70F352X | √ | √ | × | |
| D70F35XX | √ | √ | × | |
| NEC | √ | √ | × | |
| NEC+24C16 | √ | √ | × | |
| NISSAN | ALTIMA 2013 | √ | √ | √ |
| KICKS 2017- | √ | √ | × | |
| MITSUBISHI | OUTLANDER | √ | √ | × |
| TRITON 2015- | √ | √ | × | |
In conclusion:
Godiag ODOMaster supports the same function, language, and one-click upgrade as OBDSTAR ODOMaster, better than X300M.
Besides, both ODOMaster mileage correction tools support newer car models than X300M. Based on these factors, X300M has the lowest price.
GODIAG supports the same car models as ODOMASTER except for Bentley, Alfa, Ferrari, and Maserati.