5AA-B44A
Nissan Roox B44A specs
B44A is the model code of the Nissan Roox, a kei car. Japan’s transport ministry lists it in its fuel economy lists from 2021–2026 under the model type 5AA-B44A. A genuine car’s chassis number starts B44A-.
B44A at a glance
- Make
- Nissan
- Model
- Roox
- Model code
- B44A
- Model types
- 5AA-B44A
- In MLIT’s lists
- 2021–2026
- Engines
- BR06-SM21 659 cc petrol
- Gearboxes
- CVT automatic
- Drive
- front-wheel drive
- Kerb weight
- 940–990 kg
- Official fuel economy
- 20.8–27.2 km/L (59–77 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.
5AA-B44A
Listed 2021–2026. The 5AA prefix (our explanation, not MLIT’s) means hybrid passenger car certified to Japan’s 2018 emissions rules, 50% below their limits. Check 5AA-B44A against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| BR06-SM21659 cc petrol | CVT automatic | front-wheel drive | 940–990 kg | 4 | 25–27.2 km/L71–77 mpg, Japanese JC08 test | 2021–2026 |
| BR06-SM21659 cc petrol | CVT automatic | front-wheel drive | 940–990 kg | 4 | 20.8–20.9 km/L59 mpg, WLTC test | 2021–2026 |
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.
B44A 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 | B44A-000001 to 052414 |
| 2021 | B44A-052415 to 100820 |
| 2022 | B44A-100821 to 128544B44A-400001 to 418444 |
| 2023 | B44A-418445 to 435006B44A-500001 to 525760 |
| 2024 | B44A-525761 to 540251B44A-600001 to 628337 |
| 2025 | B44A-628338 to 656220 |
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 B44A before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start B44A-, 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 Roox model codes
Questions
What engine does the B44A have?
MLIT lists the Nissan Roox B44A with BR06-SM21 659 cc petrol.
What fuel economy does the B44A get?
Officially between 20.8 and 27.2 km/L (about 59–77 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 B44A?
Between 940 and 990 kg kerb weight, depending on the version.
Is 5AA-B44A the same as B44A?
Yes. 5AA-B44A is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and B44A is the model code. The chassis number starts with B44A-.
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.