5BA-B43W
Nissan Dayz B43W specs
B43W 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-B43W. A genuine car’s chassis number starts B43W-.
B43W at a glance
- Make
- Nissan
- Model
- Dayz
- Model code
- B43W
- Model types
- 5BA-B43W
- In MLIT’s lists
- 2020–2026
- Engines
- BR06 659 cc petrol
- Gearboxes
- CVT automatic
- Drive
- front-wheel drive
- Kerb weight
- 830–840 kg
- Official fuel economy
- 21.2–29.4 km/L (60–83 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-B43W
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-B43W against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| BR06659 cc petrol | CVT automatic | front-wheel drive | 830–840 kg | 4 | 29–29.4 km/L82–83 mpg, Japanese JC08 test | 2020–2026 |
| BR06659 cc petrol | CVT automatic | front-wheel drive | 830–840 kg | 4 | 21.2–23.2 km/L60–66 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.
Check a B43W before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start B43W-, 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 B43W have?
MLIT lists the Nissan Dayz B43W with BR06 659 cc petrol.
What fuel economy does the B43W get?
Officially between 21.2 and 29.4 km/L (about 60–83 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 B43W?
Between 830 and 840 kg kerb weight, depending on the version.
Is 5BA-B43W the same as B43W?
Yes. 5BA-B43W is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and B43W is the model code. The chassis number starts with B43W-.
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.