Lotus E21
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| Category | Formula One | ||||||||||
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| Constructor | Lotus | ||||||||||
| Designer(s) | James Allison (Technical Director) | ||||||||||
| Predecessor | Lotus E20 | ||||||||||
| Successor | Lotus E22 | ||||||||||
| Technical specifications | |||||||||||
| Chassis | Moulded carbon fibre and aluminium honeycomb composite monocoque, manufactured by Lotus F1 Team and designed for maximum strength with minimum weight. Installing the engine as a fully stressed member. | ||||||||||
| Suspension (front) | Carbon fibre top and bottom wishbones operate an inboard rocker via a pushrod system. This is connected to a torsion bar and damper units which are mounted inside the front of the monocoque. | ||||||||||
| Suspension (rear) | Carbon fibre top and bottom wishbones with pull rod operated torsion springs and transverse-mounted damper units mounted in the top of the gearbox casing. | ||||||||||
| Engine | Renault RS27-2013 2.4 L (146 cu in) V8 (90°). Naturally aspirated, 18,000 RPM limited with KERS, mid-mounted. | ||||||||||
| Transmission | Lotus Seven-speed semi-automatic titanium gearbox with reverse gear. | ||||||||||
| Weight | 642 kg (1,415.4 lb), with driver, cameras and ballast | ||||||||||
| Fuel |
Total Kevlar-reinforced rubber fuel cell by ATL. |
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| Tyres |
Pirelli P Zero (dry), Cinturato (wet) OZ Wheels (front and rear): 13" |
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| Competition history | |||||||||||
| Notable entrants | Lotus F1 Team | ||||||||||
| Notable drivers | 7.  Kimi Räikkönen7. Heikki Kovalainen8.  Romain Grosjean
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| Debut | 2013 Australian Grand Prix | ||||||||||
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The Lotus E21 is a Formula One racing car designed and built by the Lotus F1 team for use in the 2013 championship. The car was driven by 2007 World Champion Kimi Räikkönen and Romain Grosjean, both of whom remained with the team after competing in 2012. The E21 was the first of the 2013 season cars to be launched.
Despite the perpetual troubles the team experienced with the "passive Drag Reduction System" device on the E20 chassis, which spent most of the 2012 season in development without ever being raced, the E21 was launched with a passive DRS device of its own.
Following criticism of the cars raced in 2012 for being "ugly" because of a visible step in the design of the nose, the 2013 technical regulations allowed teams to use a "modesty panel", or a small piece of carbon fibre designed to cover the nose of the car for aesthetic purposes. However, the E21 was launched without a modesty panel, as the team felt that it offered no aerodynamic benefit, and that the aesthetic qualities it offered were not worth the added weight, however slight the weight gain might be.
() (results in bold indicate pole position; results in italics indicate fastest lap)
† Driver failed to finish the race, but was classified as they had completed greater than 90% of the race distance.
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