5BA-JG3 · 6BA-JG3
Honda N‑ONE JG3 specs
JG3 is the model code of the Honda N-ONE, a kei car. Japan’s transport ministry lists it in its fuel economy lists from 2021–2026 under 2 model types 5BA-JG3, 6BA-JG3. A genuine car’s chassis number starts JG3-.
JG3 at a glance
- Make
- Honda
- Model
- N-ONE
- Model code
- JG3
- Model types
- 5BA-JG3, 6BA-JG3
- In MLIT’s lists
- 2021–2026
- Engines
- S07B 658 cc petrol
- Gearboxes
- 6-speed manual, CVT automatic
- Drive
- front-wheel drive
- Kerb weight
- 840–860 kg
- Official fuel economy
- 21.6–28.8 km/L (61–81 mpg)
Fuel economy is from Japan’s official tests and is usually better than you’ll see on UK roads. MLIT doesn’t list power or torque.
5BA-JG3
Listed 2026. The 5BA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2018 emissions rules, 50% below their limits. Check 5BA-JG3 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| S07B658 cc petrol | 6-speed manual | front-wheel drive | 840 kg | 4 | 22 km/L62 mpg, Japanese JC08 test | 2026 |
| S07B658 cc petrol | 6-speed manual | front-wheel drive | 840 kg | 4 | 21.6 km/L61 mpg, WLTC test | 2026 |
| S07B658 cc petrol | CVT automatic | front-wheel drive | 840–860 kg | 4 | 25.6–28.8 km/L72–81 mpg, Japanese JC08 test | 2026 |
| S07B658 cc petrol | CVT automatic | front-wheel drive | 840–860 kg | 4 | 21.9–23.2 km/L62–66 mpg, WLTC test | 2026 |
6BA-JG3
Listed 2021–2025. The 6BA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2018 emissions rules, 75% below their limits. Check 6BA-JG3 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| S07B658 cc petrol | 6-speed manual | front-wheel drive | 840 kg | 4 | 22 km/L62 mpg, Japanese JC08 test | 2021–2024 |
| S07B658 cc petrol | 6-speed manual | front-wheel drive | 840 kg | 4 | 21.6 km/L61 mpg, WLTC test | 2021–2025 |
| S07B658 cc petrol | CVT automatic | front-wheel drive | 840–860 kg | 4 | 25.6–28.8 km/L72–81 mpg, Japanese JC08 test | 2021–2024 |
| S07B658 cc petrol | CVT automatic | front-wheel drive | 840–860 kg | 4 | 21.8–23 km/L62–65 mpg, WLTC test | 2021–2025 |
Each row is one version as MLIT lists it. A version can appear twice when MLIT gave figures on two tests that year. Low-emission stars and trim names aren’t shown. MLIT gives fuel economy in km/L; the mpg figures are our conversion to UK gallons. Japanese tests are gentler than real UK driving, so expect less.
JG3 build year by chassis number
Japan’s carmakers list the chassis numbers each code was built with every year from 2015. Find the serial below, or use the build year finder.
| Built | Chassis numbers |
|---|---|
| 2020 | JG3-1000001 to 1003191JG3-2000001 to 2002747 |
| 2021 | JG3-1003192 to 1013246JG3-2002748 to 2010917 |
| 2022 | JG3-1013247 to 1019530JG3-1100001 to 1103606JG3-2010918 to 2015878JG3-2100001 to 2102226 |
| 2023 | JG3-1103607 to 1114307JG3-1114313 to 1114315JG3-2102227 to 2111165 |
| 2024 | JG3-1114308 to 1114312JG3-1114316 to 1122038JG3-2111166 to 2117384 |
| 2025 | JG3-1122039 to 1127354JG3-1200001 to 1201236JG3-2117385 to 2122704JG3-2200001 to 2200817 |
From the JAMA chassis number lists: 車台番号一覧表. We keep only the chassis code, serial ranges and year. JAMA calls them reference information, not a certificate.
Check a JG3 before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start JG3-, and the engine and gearbox should match one of the versions above. Our free check reads the UK MOT history and compares it with the chassis code.
Other Honda N-ONE model codes
Questions
What engine does the JG3 have?
MLIT lists the Honda N-ONE JG3 with S07B 658 cc petrol.
What fuel economy does the JG3 get?
Officially between 21.6 and 28.8 km/L (about 61–81 mpg), depending on the version, on Japan’s own tests. Real-world figures are usually lower, especially against the older 10-15 mode test.
How heavy is the JG3?
Between 840 and 860 kg kerb weight, depending on the version.
Is 5BA-JG3 the same as JG3?
Yes. 5BA-JG3 is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and JG3 is the model code. The chassis number starts with JG3-.
About these figures
The model types, engine codes, capacities, gearboxes, drive, weights, seats and km/L figures are copied from MLIT’s yearly lists of cars on sale in Japan each March, so “listed” years are list years, not exact production dates. The English model names, mpg conversions, emissions code explanations and chassis number matching are ours. Lists before 2013 were printed as PDFs that we read by machine; where an older list gives an engine code that doesn’t match its capacity, we’ve used the figure the same model type has in other years. Check anything that matters against the car’s own papers. Spotted a mistake? Email [email protected]. All Honda model codes.
Source: Ministry of Land, Infrastructure, Transport and Tourism (MLIT), Japan, fuel economy lists 2004–2026, used under the Public Data License 1.0. Edited and translated by JDM History.