Engine and transmission

In early development, the car was fitted with a 4.7-litre V8 engine with fixed-vane twin-turbochargers,^[8] but the engine was replaced with an in-house developed 5.0-litre V8 engine and fitted with twin-turbochargers which generates a maximum power output of 706 kW (960 PS; 947 hp) at 6,900 rpm and 1,100 N⋅m (811 lbf⋅ft) of torque at 4,000 rpm.^[9] The total weight of the engine is only 197 kg (434 lb) due to a carbon fibre inlet manifold and aluminium construction. The transmission is a specially developed CIMA 7-speed dual-clutch with paddle shifters.^[10] It is the first dual-clutch transmission to feature only one input shaft. The second clutch slows down the input shaft during up shifts in order to reduce the time it takes to synchronise the next gear, resulting in faster shift times. Most notably, the transmission weighs only 81 kg (179 lb).^[11]

Performance (manufacturer claimed data)

• 0–100 km/h (0–62 mph) in 2.8 seconds^[12]
• 0–200 km/h (0–124 mph) in 8.0 seconds^[12]

The top speed for the production model is claimed to be 400 km/h (249 mph).^[9]

Koenigsegg Agera R (2011–2014)

The Agera R made its debut at the March 2011 Geneva Motor Show with a Speed Racer livery, and special Michelin tyres. It can accelerate from 0–100 km/h (0–62 mph) in 2.8 seconds and attain a theoretical top speed of 439 km/h (273 mph). The Agera R has a drag coefficient of Cd=0.37, or Cd=0.33 at high speed due to its adaptive rear wing, while producing 300 kg (660 lb) of downforce at 250 km/h (155 mph). This adaptive rear wing system is lighter than conventional hydraulic/electrical adaptive systems, and has the unique ability to compensate for head/tailwind due to its spring-loaded design. Furthermore, the pylons holding the wing play not only a role in the Agera R's aerodynamic performance, but also assist in extracting hot air from the engine bay.^[12]

On 2 September 2011, during test sessions in Ängelholm, the Agera R broke six world land speed records for a production car, including 0–300 km/h (0–186 mph) in 14.53 seconds, and 0–300–0 km/h in only 21.19 seconds.^[15][16] The braking performance required to maintain this record is enabled in part by the Agera's stability, demonstrated by Koenigsegg test driver and drivetrain technician Robert Serwanski, who was recorded by passenger Rob Ferretti (founder of the group "Super Speeders") braking from 300 km/h to 0 without holding the steering wheel.^[17]

The Agera R can produce lateral cornering forces of 1.60 G,^[18] due to a combination of mechanical balance and high levels of grip from the specially developed Michelin Supersport tyres.

The 2013 version of the Agera R premiered at the 2012 Geneva Motor Show. Upgrades included carbon fibre wheels, enhanced aerodynamics, and engine upgrades allowing the Agera R's twin-turbo V8 engine to have a power output of 1,140 PS (1,124 hp; 838 kW) at 7,100 rpm and 1,200 N⋅m (885 lb⋅ft) of torque at 4,100 rpm on E85 biofuel.^[19] Koenigsegg's Flex Fuel Sensor technology allows the ECU to respond to varying fuel qualities and alcohol content by reducing power levels as a means of protecting the engine. On standard low-octane fuels, power is reduced to 960 PS (706 kW; 947 hp).^[18]

Koenigsegg Agera S (2013–2014)

Koenigsegg presented the Agera S model in 2013. Built for markets lacking E85 biofuel, the Agera S has most of the upgrades of the Agera R compared to the normal Agera including the dynamic wing, but is optimised for running on low-octane petrol generating a maximum power output of 1,030 PS (758 kW; 1,016 hp) and 1,100 N⋅m (811 lbf⋅ft) of torque compared to the 960 PS (706 kW; 947 hp) and 1,100 N⋅m (811 lbf⋅ft) of torque of an Agera R running on the same fuel.^[20] In 2013, one Agera S was the 100th Koenigsegg ever produced, celebrated by a specially-built car with gold leaf inlays named "Hundra" (Swedish for "one hundred").^[21]

On 10 June 2014, NAZA Swedish Motors launched the Agera S in Malaysia. It was the second Koenigsegg after the CCXR to arrive in the country, thus setting a new market for Koenigsegg. It was priced at RM 5,000,000 before taxes and it was estimated that it will be priced at RM 15,000,000 with government tax and duties—making it one of the most expensive cars in the country. The Agera S is the only model offered in Malaysia due to the absence of E85 biofuel there.^[22]

Koenigsegg One:1 (2014–2015)

The Koenigsegg One:1^[23] was presented at the 2014 Geneva Motor Show held in March.^[24] Koenigsegg built six cars apart from the car presented at the Geneva Motor Show, all of which were already sold. Koenigsegg took two cars to the 2014 Goodwood Festival of Speed, where they were displayed alongside other sports cars such as the McLaren P1, LaFerrari, the Porsche 918 Spyder and the Pagani Huayra.

The car is fitted with a variant of the same 5.0 L twin-turbocharged V8 engine used in the other Agera variants. It generates a maximum power output of 1,360 PS (1,000 kW; 1,341 hp) at 7,500 rpm and 1,371 N⋅m (1,011 lb⋅ft) of torque at 6,000 rpm.^[25] The transmission is a 7-speed dual clutch paddle shift as used in other variants of the Agera.

The name One:1 comes from the power-to-weight ratio (1,360 PS to 1360 kg) giving the car 1 PS per 1 kg mass. The 1,360 PS power output is the equivalent of one megawatt, which Koenigsegg claims make the One:1 the 'world's first megacar'. The car is track-focused as opposed to the previous cars made by Koenigsegg, leading to changes such as limited boot space.

Koenigsegg Agera RS (2015–2018)

The Agera RS was unveiled at the 2015 Geneva Motor Show, along with the prototype version of the Regera. The Agera RS is an advanced version of the Agera R, implementing some of the new technology and features of the One:1 and combining the features of the Agera R and the Agera S.^[26] Koenigsegg billed it as "the ultimate track tool" due to its lightweight features and track optimised technologies. The Agera RS produces 450 kg of downforce at 250 km/h. The 5.0-litre V8 engine now has a power output of 1,176 PS (865 kW; 1,160 hp) on regular pump gasoline. The optional 1-megawatt package increases the engine's power to 1,360 PS (1,000 kW; 1,341 hp). 27 units of the Agera RS were built. The model was initially going to be limited to 25 units, however two extra cars were built, one being the factory development car and one as a replacement for a customer car damaged while it was being used for shakedown testing (Agera RS Phoenix built after the crash of Agera RS Gryphon).^[27] Each Agera RS could be fully customised by its owner.

The Agera RS has the following fuel economy: *21 L/100 km (11 mpg_‑US) in the city and 13 L/100 km (18 mpg_‑US) on the highway – which averages to 18 L/100 km (13 mpg_‑US).^[28]

The last Agera RS rolled off the production line on 4 April 2018.^[29]

Koenigsegg Agera Final Edition (2016–2018)

At the 2016 Geneva Motor Show, a final three-car series of the Agera was announced as a final celebration of the Agera range and as the last models to wear the Agera badge. The cars could be fully customised and combined with the Agera RS chassis with the One:1 engine. The first car to be unveiled was called the 'One of One'. It featured a unique orange paint scheme with bare carbon and blue accents. The exterior of the car was complemented with a large adjustable rear wing similar to the One:1 and triple front canards along with a large front splitter.^[30][31]

The other two distinct final edition cars were unveiled online in July 2018 and were called 'Agera FE Thor' and 'Agera FE Väder' respectively. Thor features a custom two-tone black paintwork consisting of crushed diamonds and white accents. The exterior features a large rear wing reminiscent of that found on the Agera XS, and a different set of front canards, along with a large front splitter and a Le Mans-style central fin for improved downforce, setting it apart from the rest of the Agera models. Väder features the same crushed diamond paintwork with a bare carbon fibre centre along with white accents, incorporating the same rear wing as Thor but excludes the central fin. Both cars made their public appearance at the 2018 Goodwood Festival of Speed.