2010 Buick Lacrosse/Allure — Full Specifications
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The 2010 Buick Lacrosse/Allure is a saloon/sedan offered with 3 engines (2.4L 4-cyl, 3L 6-cyl, 3.6L 6-cyl). Its most fuel-efficient configuration returns around 28 mpg (UK) / 23 mpg (US EPA) combined, with 23–28 mpg (UK) across all configurations. Owners often keep a Buick Lacrosse/Allure workshop manual to hand for servicing and repairs.
Full Specifications
| Engine (most efficient) | 2.4L 4-cyl |
|---|---|
| Engine options | 2.4L 4-cyl · 3L 6-cyl · 3.6L 6-cyl |
| Transmission (most efficient) | Automatic (S6) |
| Fuel Type | Regular Gasoline |
| Powertrain | Conventional |
| Drive | Front-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 100 cu ft (2,832 L) |
| Luggage Volume (EPA) | 16 cu ft (453 L) |
| Fuel Economy (UK) | 28 combined / 23 urban / 36 extra-urban mpg |
| Fuel Economy (US EPA) | 23 combined / 19 city / 30 highway mpg |
| CO₂ Emissions | 240 g/km |
| EPA Est. Annual Fuel Cost | $2,900 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 4 configurations for the 2010 Buick Lacrosse/Allure across 3 engines (2.4L 4-cyl, 3L 6-cyl, 3.6L 6-cyl). Combined fuel economy ranges from 19 to 23 mpg (US), or 23 to 28 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2.4L 4-cyl | Automatic (S6) | Front-Wheel Drive | 28 | 23 (19/30) | 240 | $2,900 |
| 3L 6-cyl | Automatic (S6) | 4-Wheel or All-Wheel Drive | 23 | 19 (16/25) | 291 | $3,550 |
| 3L 6-cyl | Automatic (S6) | Front-Wheel Drive | 24 | 20 (17/26) | 276 | $3,350 |
| 3.6L 6-cyl | Automatic (S6) | Front-Wheel Drive | 25 | 21 (17/27) | 263 | $3,200 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
EPA measures interior passenger volume at 100 cubic feet (about 2,832 litres) and luggage volume at 16 cubic feet (about 453 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2010 Buick Lacrosse/Allure
Running Costs: 2010 Buick Lacrosse/Allure
Covering around 8,000 miles a year in a 2010 Buick Lacrosse/Allure at 28 mpg combined, expect roughly 1,299 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,900 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2010 Buick Lacrosse/Allure Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
How It Compares
At 28 mpg (UK) combined it sits close to the 29 mpg average for Buick models in our database.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2010 Buick Lacrosse/Allure
Frequently Asked Questions
What engine does the 2010 Buick Lacrosse/Allure have?
EPA lists 3 engines for the 2010 Buick Lacrosse/Allure: 2.4L 4-cyl, 3L 6-cyl, 3.6L 6-cyl. The most fuel-efficient configuration pairs the 2.4L 4-cyl with a automatic (s6).
What is the fuel economy of the 2010 Buick Lacrosse/Allure?
The most efficient configuration returns around 28 mpg (UK) combined, or 23 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 23 to 28 mpg.
How much does the 2010 Buick Lacrosse/Allure cost to fuel per year?
The US EPA estimates about $2,900 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
How much interior and luggage space does the 2010 Buick Lacrosse/Allure have?
EPA measures interior passenger volume at 100 cubic feet (about 2,832 litres) and luggage volume at 16 cubic feet (about 453 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.