6BA-JF4 · DBA-JF4
Honda N‑BOX Custom JF4 specs
JF4 is the model code of the Honda N-BOX Custom / N-BOX, a kei car. Japan’s transport ministry lists it in its fuel economy lists from 2018–2023 under 2 model types 6BA-JF4, DBA-JF4. A genuine car’s chassis number starts JF4-.
Buying one? Read our Honda N-Box import guide for known problems, auction sheet notes and what to check.
JF4 at a glance
- Make
- Honda
- Model
- N-BOX Custom, N-BOX
- Model code
- JF4
- Model types
- 6BA-JF4, DBA-JF4
- In MLIT’s lists
- 2018–2023
- Engines
- S07B 658 cc petrol
- Gearboxes
- CVT automatic
- Drive
- four-wheel drive
- Kerb weight
- 950–1,030 kg
- Official fuel economy
- 19–25.4 km/L (54–72 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.
6BA-JF4
Listed 2020–2023. 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-JF4 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| S07B658 cc petrol | CVT automatic | four-wheel drive | 950–1,030 kg | 4 | 23–25.4 km/L65–72 mpg, Japanese JC08 test | 2020–2023 |
| S07B658 cc petrol | CVT automatic | four-wheel drive | 950–1,030 kg | 4 | 19–20.4 km/L54–58 mpg, WLTC test | 2020–2023 |
DBA-JF4
Listed 2018–2019. The DBA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2005 emissions rules, 75% below their limits. Check DBA-JF4 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| S07B658 cc petrol | CVT automatic | four-wheel drive | 950–1,030 kg | 4 | 23–25.4 km/L65–72 mpg, Japanese JC08 test | 2018–2019 |
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.
JF4 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 |
|---|---|
| 2017 | JF4-1000001 to 1010315JF4-2000001 to 2004542 |
| 2018 | JF4-1010316 to 1032895JF4-2004543 to 2016388JF4-3000001 to 3000008JF4-4000001 to 4000034JF4-8000001 to 8000965JF4-8100001 to 8100193 |
| 2019 | JF4-1032896 to 1052200JF4-1100001 to 1105809JF4-2016389 to 2024251JF4-2100001 to 2102425JF4-3000009 to 3000014JF4-4000035 to 4000052JF4-8000966 to 8001654JF4-8100194 to 8100325JF4-8200001 to 8200264JF4-8300001 to 8300045 |
| 2020 | JF4-1105810 to 1122353JF4-1200001 to 1201301JF4-2102426 to 2108469JF4-2200001 to 2200609JF4-8200265 to 8200987JF4-8300046 to 8300155JF4-8400001 to 8400036JF4-8500001 to 8500003 |
| 2021 | JF4-1201302 to 1219402JF4-2200610 to 2208623JF4-8400037 to 8400903JF4-8500004 to 8500143 |
| 2022 | JF4-1218001 to 1218041JF4-1219348 to 1219356JF4-1219403 to 1239170JF4-2208022 to 2208055JF4-2208607 to 2208611JF4-2208624 to 2217399JF4-8400904 to 8401704JF4-8500144 to 8500287 |
| 2023 | JF4-1239171 to 1256394JF4-2217400 to 2223927JF4-8401705 to 8402264JF4-8500288 to 8500365 |
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 JF4 before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start JF4-, 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-BOX Custom model codes
Questions
What engine does the JF4 have?
MLIT lists the Honda N-BOX Custom / N-BOX JF4 with S07B 658 cc petrol.
What fuel economy does the JF4 get?
Officially between 19 and 25.4 km/L (about 54–72 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 JF4?
Between 950 and 1,030 kg kerb weight, depending on the version.
Is 6BA-JF4 the same as JF4?
Yes. 6BA-JF4 is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and JF4 is the model code. The chassis number starts with JF4-.
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.