The Renault Mégane Renault Sport (alternatively Renault Mégane RS) is a series of high-performance hatchback models based on the Renault Mégane, produced since 2004 by the high-performance subsidiary company Renault Sport for its parent company Alpine, a subsidiary of Renault. The Mégane RS won awards such as "Best hot hatch" from What car? (2010–2014), "Highest placed non-supercar" in Evo's annual Car of the Year test 2011 and "Best hot hatch" from Top Gear.
Mégane Renault Sport I (based on Second generation Mégane; 2004–2009)

The first generation Mégane RS was introduced in September 2004 and is based on the Renault Mégane II small family car. The Mégane II RS was available in three-door and five-door hatchback versions, both with the same engine and was built at Renault's Dieppe factory by using body shells made in Palencia, Spain. The Mégane Renault Sport 225 uses double-axis strut suspension with independent steering axis at the front and an electric power steering.

Engine and performance
The RS uses a turbocharged 2.0-litre petrol engine that produces , allowing the car to achieve 0–100 km/h in 6.5 seconds (0–60 mph in 6.5 seconds), with a top speed of about . Ninety percent of the engine's torque is available from 2,000 rpm until redline. A twin-scroll turbocharger minimizes turbo lag, especially when throttle is applied at over 2,000 rpm. The turbocharge functions at 1,800 rpm. The transmission is a six-speed manual. Renault's claimed combined economy is .

In a 2004 road test by Mexican car magazine Automóvil Panamericano, the engine developed a peak output of .
Equipment
The Mégane Renault Sport has a speed-limiter, which prevents the car from passing a user-determined speed. It can be disabled or recalled with a button-press, and is set in the same way as the cruise control.
The Mégane RS is equipped with leather/cloth seats, seat belts with red stitching, 18-inch alloy wheels, dual sunroof, eight airbags and xenon headlights with headlight washers and Brembo brake discs.
Other features include automatic double optic headlights, 18-inch alloy wheels, air conditioning, ABS with EBD and electronic stability control.
The Lux models feature metallic paint, hands free Renault card, electronic folding mirrors, tyre pressure monitor, electronic front and rear windows, climate control, leather upholstery, 4x15W RDS radio with CD-MP3 player and 6 speakers, front carpet mats, electronic rear view mirror, rear spoiler (petrol engine models only) and 18-inch alloy wheels over the base model.
Renault Sport 225 Cup (2005–2009)
Introduced in 2005, the Megane Renault Sport 225 Cup includes the Cup Chassis option, which adds drilled brake discs, red front and rear brake calipers and increased brake master cylinder diameter, different 18-inch wheels plus revised stiffened steering. Other features include carbon grey interior upholstery with silver stitching.
The car is lighter than the 225 Sport Hatch and has a gross weight of .
The handling improvements featured on the Cup were made to the standard Mégane, beginning in late 2005.
Facelift
The Mégane RS received a facelift in July 2006. The facelifted model introduced new safety features and minor exterior changes such as new tapered headlights, a revised front grille and bumpers along with translucent taillights.
Renault Sport 230 Renault F1 Team R26 (2006–2009)
The Megane Renault Sport 230 Renault F1 Team R26 is a version that commemorates the success of Renault in the Formula 1 World Championship with the 2005 and 2006 Constructors' and Drivers' Championship titles and is named after the 2006 F1 car (R26). It is based on the facelifted Mégane RS.
The engine is rated at at 5,500 rpm and at 3,000 rpm. It incorporates the improved version of the Cup Chassis package now with a limited slip differential fitted for the first time in addition to 18-inch Anthracite spoked alloy wheels with Michelin Pilot Sport 2 235/40 R18 tires, Brembo front and rear red brake calipers and an increased brake master cylinder diameter, plus revised stiffened steering. Other features include a sport exhaust, Recaro seats, climate control, 4x15-watt RDS radio single CD/MP3 player with 6 speakers, Renault F1 decals, numbered plaque, limited slip differential and a rear spoiler. The car weights kerb, gross.
Renault Sport dCi 175 (2007–2009) The Megane Renault Sport dCi 175 is a version with a 2.0-litre (1,997 cc) diesel engine. Engine is rated at at 3,750 rpm and at 2,000 rpm.





