5BA-B46W
Nissan Dayz B46W specs
B46W is the model code of the Nissan Dayz, a kei car. Japan’s transport ministry lists it in its fuel economy lists from 2020–2026 under the model type 5BA-B46W. A genuine car’s chassis number starts B46W-.
B46W at a glance
- Make
- Nissan
- Model
- Dayz
- Model code
- B46W
- Model types
- 5BA-B46W
- In MLIT’s lists
- 2020–2026
- Engines
- BR06 659 cc petrol
- Gearboxes
- CVT automatic
- Drive
- four-wheel drive
- Kerb weight
- 890–900 kg
- Official fuel economy
- 18.2–24.6 km/L (51–69 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-B46W
Listed 2020–2026. 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-B46W against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| BR06659 cc petrol | CVT automatic | four-wheel drive | 890–900 kg | 4 | 24.2–24.6 km/L68–69 mpg, Japanese JC08 test | 2020–2026 |
| BR06659 cc petrol | CVT automatic | four-wheel drive | 890–900 kg | 4 | 18.2–21 km/L51–59 mpg, WLTC test | 2020–2026 |
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.
B46W 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 |
|---|---|
| 2019 | B46W-000001 to 005113 |
| 2020 | B46W-005114 to 007629B46W-100001 to 102606 |
| 2021 | B46W-102607 to 106786 |
| 2022 | B46W-106787 to 109771B46W-300001 to 301162 |
| 2023 | B46W-301163 to 304813B46W-400001 to 401349 |
| 2024 | B46W-401350 to 403583B46W-500001 to 502057 |
| 2025 | B46W-502058 to 504175B46W-600001 to 602161 |
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 B46W before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start B46W-, 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 Nissan Dayz model codes
Questions
What engine does the B46W have?
MLIT lists the Nissan Dayz B46W with BR06 659 cc petrol.
What fuel economy does the B46W get?
Officially between 18.2 and 24.6 km/L (about 51–69 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 B46W?
Between 890 and 900 kg kerb weight, depending on the version.
Is 5BA-B46W the same as B46W?
Yes. 5BA-B46W is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and B46W is the model code. The chassis number starts with B46W-.
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 Nissan 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.