Smart 454 - ForFour

A Smart ForFour
Going into production in 2004, the 454 ForFour was the first attempt by Smart to make a more conventional looking 5 door hatchback. Compared to the rest of the model family, it was (and continues to be) radical in that it was the first Smart to have Naturally Aspirated engines in the line up and the first model to offer a Manual gearbox as standard over the Semi-Automatic gearbox, which was also available.

  1. Engines
    1. Brabus
  2. Transmission
  3. Trim levels
  4. Typical issues
    1. Engine/Suspension
    2. Exterior
    3. Interior
  5. VIN number patterns


The 454 ForFour had the following range of engines throughout the lifespan of the model:


A Smart ForFour Brabus
The Brabus 454 ForFour used a different 1.5 engine (engine code: 4G15) which was turbocharged to produce 177bhp.


All of the engines were available with a 5 speed manual gearbox. Additionally, all of the engines (apart from the Brabus) could be specified with a 6 speed semi-automatic gearbox (this is completely different to the 6 speed semi automatic gearbox found in the 450 and the 452).

Trim levels

In the UK, the range was sold originally as a Pulse or a Passion (the Pure was available in the European continent) but there were a few different trims available over the lifetime of the 454 ForFour.

Name Badge Year(s)
Black None 2004 - 2007
Coolstyle None 2004 - 2007
Brabus 2005 - 2007
Passion 2004 - 2007
Pulse 2004 - 2007
Purestyle None 2004 - 2007

Typical issues


  • If the car is a Semi-automatic, these gearboxes have been known to fail. Normally, this could be down to a sticky clutch actuator or sensors going out of alignment. There is also a software update for the ECU which can help with this. A reteach of the clutch actuator and lubrication may help.
  • The rear shock absorbers are known to leak.
  • On 454s fitted with manual gearboxes, the gearshift is known to be stiff (although not overly so). Greasing up the selector ball joints should help.
  • On a Brabus 454, the cambelt requires changing at around 60,000 miles.
  • The engine in the Brabus ForFour is completely different to the the Naturally Aspirated 1.5 engine (Engine codes - Brabus: 4G15, Standard: 4A91) so parts are most likely not be interchangeable between the two.
  • The turbo manifold, like the 450 and the 452, are known to crack. We believe there is a upgraded version available from forfour.co.uk site.
  • The Semi-Automatic varieties of the ForFour has a emulated creep, which can be surprising if you have come from a 450/451 Fortwo or a 452 Roadster where it does not have this.


  • In hot weather, the door catches appear to be unreliable as to wherever or not they latch onto the frame and so the door cannot be closed. Lubrication of the catches appear to be solution.
  • Parts for the Series I ForFour are comparatively rare against the 450, 451 and 452 on the used market. Check that the panels are not damaged and that things like the headlamps and rear light clusters are OK.
  • The rear lights appear to be always black, regardless of the Tridion colour.
  • On Panoramic roofs, the front half is polycarbonate and appears to haze up very quickly. This is also the case with the rear quarter windows as well.


  • The (really cool) multi-function steering wheel can be retrofitted but it is not cost effective to do so if you want it, buy it with the car (The second WirralSmarts car has had the conversion done).

VIN number patterns

VIN Number prefix Model
454000, 454001 ForFour CDI
454030, 454033 ForFour 1.1
454031 ForFour 1.3
454032 ForFour 1.5
454034 ForFour Brabus