3BA-ASC10 · DBA-ASC10
Lexus RC300 ASC10 specs
ASC10 is the model code of the Lexus RC300. Japan’s transport ministry lists it in its fuel economy lists from 2016–2026 under 2 model types 3BA-ASC10, DBA-ASC10. A genuine car’s chassis number starts ASC10-.
ASC10 at a glance
- Make
- Lexus
- Model
- RC300
- Model code
- ASC10
- Model types
- 3BA-ASC10, DBA-ASC10
- In MLIT’s lists
- 2016–2026
- Engines
- 8AR 1,998 cc petrol
- Gearboxes
- 8-speed automatic
- Drive
- rear-wheel drive
- Kerb weight
- 1,680–1,700 kg
- Official fuel economy
- 12–13 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-ASC10
Listed 2021–2026. The 3BA prefix (our explanation, not MLIT’s) means petrol passenger car certified to Japan’s 2018 emissions rules. Check 3BA-ASC10 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 8AR1,998 cc petrol | 8-speed automatic | rear-wheel drive | 1,680–1,700 kg | 4 | 12 km/L34 mpg, WLTC test | 2021–2026 |
DBA-ASC10
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-ASC10 against ULEZ and clean air zones.
| Engine | Gearbox | Drive | Weight | Seats | Fuel economy | Listed |
|---|---|---|---|---|---|---|
| 8AR1,998 cc petrol | 8-speed automatic | rear-wheel drive | 1,680–1,700 kg | 4 | 12.2–13 km/L34–37 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.
ASC10 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 | ASC10-5000101 to 5002443ASC10-6000000 to 6000304 |
| 2016 | ASC10-5002444 to 5005806ASC10-6000305 to 6000968 |
| 2017 | ASC10-5005807 to 5007926ASC10-6000969 to 6001299 |
| 2018 | ASC10-5007927 to 5009340ASC10-6001300 to 6001761 |
| 2019 | ASC10-5009341 to 5010621ASC10-6001762 to 6002169 |
| 2020 | ASC10-5010622 to 5011390ASC10-6002170 to 6002402 |
| 2021 | ASC10-6002403 to 6002619 |
| 2022 | ASC10-6002618 to 6002770 |
| 2023 | ASC10-6002771 to 6002971 |
| 2024 | ASC10-6002972 to 6003064 |
| 2025 | ASC10-6003065 to 6003147 |
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 ASC10 before you buy
Make sure the car is what the advert says: the chassis number on the V5C should start ASC10-, 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 ASC10 have?
MLIT lists the Lexus RC300 ASC10 with 8AR 1,998 cc petrol.
What fuel economy does the ASC10 get?
Officially between 12 and 13 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 ASC10?
Between 1,680 and 1,700 kg kerb weight, depending on the version.
Is 3BA-ASC10 the same as ASC10?
Yes. 3BA-ASC10 is the full model type: the letters before the hyphen are Japan’s emissions code, which changed as the rules were tightened, and ASC10 is the model code. The chassis number starts with ASC10-.
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.