On both the five door C1 and 107, though not the Aygo, the rear tail light cluster extends from the edge of the rear doors to the rear window, without a visually expressed "C-pillar". The C1 is powered by a 1.0 L three cylinder engine, which has a fuel economy of 61.4 mpg. A 1.4 L four cylinder HDI diesel engine which has a fuel economy of 68.9 mpg is also available. According to the German magazine Der Spiegel, the C1 is the production car with the second-best fuel economy both among petrol engines and among diesel engines. In January 2010, PSA Peugeot Citroën announced that it was recalling "under 100,000 units" of the C1 and the Peugeot 107, following the worldwide recall by Toyota for a faulty sticking accelerator pedal – which the Aygo is affected by. Under certain circumstances, the pedal can stick in a partially depressed position, or return slowly to the off position.
Engines
Model
Engine
Displacement
Power
Torque
Top speed
emission
1.4HDi 8V
I4
1398 cc
at 4,000 rpm
at 1,750 rpm
15.6 s
109
Trim range (United Kingdom)
The Vibe, available in three-door or five-door, this was the basic model and the cheapest. Did not come with central locking, a rev counter or electric windows. Only available with the 1.0i engine.
The Rhythm, available in three-door or five-door, this trim added remote central locking, colour-coded wing mirrors, two side airbags and an engine rev counter. The 1.4 HDi diesel and the 1.0i petrol engines were both available with this trim.
The Code, available in three-door or five-door and with the 1.4 HDi engine, added to the Rhythm specification by including 14 inch alloy wheels, half leather-trimmed seats, chrome interior trim inserts and a glove box cover.
;Special editions
The Cool – based on the Vibe, adding air conditioning and blue seat fabrics/dashboard inserts, available in Lipizan White or Damas Blue.
The Airplay – based on the Rhythm, adding full iPod connectivity, iPod cradle, a 4 GB iPod Nano and coloured dashboard inserts and door pulls. Early models were available with bright, swirling decals. This model was originally revealed at the 2006 British International Motor Show in July 2006.
Designer Franco Sbarro created an extreme C1, called the C1 GT, a design concept that follows the same theme of his previous Xsara Picasso Concept. The extreme bodywork feature very wide wheels and gullwing doors, alongside a modified 1.6L engine from the C2VTR and C4 WRC rallycar brakes. It is said to have reached over. In Portugal, a commercial van version called the Entreprise is offered, equipped with the 1.4L diesel engine and available only in the three-door body, for urban use. Its 107 sibling also offers an identical version. In the United Kingdom, the Electric Car Corporation has been selling an electric car based on the C1, called the Citroën C1 ev'ie since 30 April 2009. Its list price on that date was £16,850, "double the cost of the petrol version".
2009 Facelift
In January 2009, the Citroën C1 was facelifted at the same time as the Peugeot 107 and Toyota Aygo. The new C1 features a new front bumper incorporating a new grille, in keeping with Citroën's family look. Trim levels were also refreshed – basic Vibe models became 'VT', and Rhythm became 'VTR'. Seat fabrics and ventilation controls were also changed, and all models received colour-coded front bumpers and new wheel trims. A special edition "Splash" was available at launch, though this was a strictly limited edition. This was based on the basic "VT". However, it featured air conditioning, a CD player and electric front windows. The Splash model was available in Electra Blue or Lipizan White. Electra Blue came with white door mirrors, whilst the Lipizan White came with glossy black door mirrors. Engines remained the same, but tweaks mean the 1.0 petrol now emits just 106 g/km of and reportedly able to achieve fuel consumption. The 1.4 HDi diesel engine remains unchanged, again only available in the higher specification. Three new colours were also added to the line-up.
2012 Facelift
Citroën made a further facelift in March 2012. Changes included;
Two new trims were added to the facelift C1 range – Platinum and Edition, both coming with alloy wheels, leather steering wheel and gearstick as standard. VTR+ became the entry level when these were introduced.
Reliability
Breakdown statistics reported by the German Automobile Club in May 2010 placed the Citroën C1 at the top of the sub small car class, in respect of the low breakdown rates achieved for cars aged between one and four years. Class laggards were the Chevrolet Matiz and the Smart Fortwo.
Safety
The Euro NCAP score was reduced from 4 stars to 3 stars for the 2012 facelift.