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Audi R18 e-tron Le Mans Racecar Updated

New season, new technology

Erick Ayapana
Mar 24, 2015

The outgoing Audi R18 e-tron race car had a standout season last year, including a 1st and 2nd place finish at the 24 Hours of Le Mans. Audi hopes to continue that success with the new R18 e-tron, which sports aerodynamic and powertrain upgrades, along with a new headlight design showcasing Audi’s Matrix LED and Laserlight technology.

2015 Audi R18 e tron Quattro above Photo 2/6   |   2015 Audi R18 E Tron Quattro Above

For starters, engineers improved the kinetic-energy recovery system (KERS) to store more energy and provide more power per lap. Audi says the flywheel storage system now holds up to 700 kilojules of energy (a 17-percent increase compared to last year), while usable energy per lap jumps from 2 to 4 megajoules. The system powers the front electric motor, which now makes 268 hp, 40 more horses than before.

2015 Audi R18 e tron Quattro headlight Photo 3/6   |   2015 Audi R18 E Tron Quattro Headlight

Due to the electric motor’s increased power, regulations state that the internal combustion engine must consume less. In the case of the R18’s 4.0-liter turbodiesel V-6, it must use 2.5 percent less diesel per lap this year compared to 2014. With that said, the engine will be more efficiently while still producing 550 hp.

2015 Audi R18 e tron Quattro rear three quarter Photo 4/6   |   2015 Audi R18 E Tron Quattro Rear Three Quarter

The new R18 rides on the same carbon-fiber monocoque from the previous race car, but Audi made numerous aerodynamic improvements. The front end, for example, has a redesigned wing and wheel arches, while the sidepods improve airflow to increase engine cooling and reduced drag. The engine cover has also been modified, with a more tapered design that reduces drag.

The FIA World Endurance Championship season kicks off on April 12 at Silverstone, while Circuit of the Americas is on the schedule for September 19.

Source: Audi

2015 Audi R18 e tron Quattro profile Photo 5/6   |   2015 Audi R18 E Tron Quattro Profile
2015 Audi R18 e tron Quattro front Photo 6/6   |   2015 Audi R18 E Tron Quattro Front
By Erick Ayapana
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