3BA-ASE30 · DBA-ASE30
Lexus IS300 ASE30 specs
ASE30 is the model code of the Lexus IS300. Japan’s transport ministry lists it in its fuel economy lists from 2016–2026 under 2 model types 3BA-ASE30, DBA-ASE30. A genuine car’s chassis number starts ASE30-.
ASE30 at a glance
- Make
- Lexus
- Model
- IS300
- Model code
- ASE30
- Model types
- 3BA-ASE30, DBA-ASE30
- In MLIT’s lists
- 2016–2026
- Engines
- 8AR 1,998 cc petrol
- Gearboxes
- 8-speed automatic
- Drive
- rear-wheel drive
- Kerb weight
- 1,620–1,670 kg
- Official fuel economy
- 12.2–13.2 km/L (34–37 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.
3BA-ASE30
Listed 2021–2026. The 3BA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2018 emissions rules. Check 3BA-ASE30 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 8AR1,998 cc petrol | 8-speed automatic | rear-wheel drive | 1,640–1,670 kg | 5 | 12.2 km/L34 mpg, WLTC test | 2021–2026 |
DBA-ASE30
Listed 2016–2020. 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-ASE30 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 8AR1,998 cc petrol | 8-speed automatic | rear-wheel drive | 1,620–1,660 kg | 5 | 12.6–13.2 km/L36–37 mpg, Japanese JC08 test | 2016–2020 |
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.
ASE30 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 |
|---|---|
| 2015 | ASE30-0001001 to 0001929ASE30-5001101 to 5019057 |
| 2016 | ASE30-0001930 to 0003529ASE30-5019058 to 5045880 |
| 2017 | ASE30-0003530 to 0005201ASE30-5045881 to 5069463 |
| 2018 | ASE30-0005202 to 0006018ASE30-5069464 to 5091632 |
| 2019 | ASE30-0006019 to 0006482ASE30-5091633 to 5104874 |
| 2020 | ASE30-0006483 to 0007449ASE30-5104875 to 5112240 |
| 2021 | ASE30-0007428 to 0010801 |
| 2022 | ASE30-0010802 to 0013160 |
| 2023 | ASE30-0013156 to 0014316 |
| 2024 | ASE30-0014317 to 0014970 |
| 2025 | ASE30-0014971 to 0015820 |
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 an ASE30 before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start ASE30-, 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.
Questions
What engine does the ASE30 have?
MLIT lists the Lexus IS300 ASE30 with 8AR 1,998 cc petrol.
What fuel economy does the ASE30 get?
Officially between 12.2 and 13.2 km/L (about 34–37 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 ASE30?
Between 1,620 and 1,670 kg kerb weight, depending on the version.
Is 3BA-ASE30 the same as ASE30?
Yes. 3BA-ASE30 is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and ASE30 is the model code. The chassis number starts with ASE30-.
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 Lexus 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.