Servicing and Repairs

At Smart-TECNIC we pride ourselves on being able to carry out all aspects of servicing, repair and maintenance for smart cars. Here are some details and information on the services we carry out:


Air Conditioning

Smart-TECNIC can carry out re-gassing and repairs to air-conditioning systems on all makes of Smart car. Most problems are caused by either the fracturing of one particular pipe where it fits into the air-con compressor or leaks from the air conditioning condensor. Air conditioning re-gas is £69, please contact us for other repairs.


Smart-TECNIC carries the MB STAR diagnosis equipment which is a near-dealership level system. We can carry out a scan of your car and clear existing fault codes from your ECU. If your car has a mis-fire or you are worried about high oil consumption, we can also carry out a cylinder leakage test. The equipment we use for this pressurises each cylinder of your car’s engine, and determines whether the cylinder has compression, and if not it reveals why not. This test usually takes about an hour to complete.

453 Diagnostics


Smart-TECNIC can re-code keys as required, and can also supply new replacement keys (the blade is uncut), both of the single and three button type. We charge £48 for the coding of 1 – 3 keys. Please contact us for the cost of a new replacement key.


The 450 City or Fortwo model should be serviced every 10,000miles or 12 months, whichever is sooner, following the cycle “A B A C”. We also recommend an intermediate oil and filter change which we do for just £48 while you wait (but must be pre-booked).

The 451 Fortwo and 454 Forfour models have a simpler A or B servicing schedule, but we feel that the intermediate oil change is just as important.

The sports car models have manufacturer intervals of 7,000 miles, but with an intermediate oil change we believe these can be extended to the same 10,000 miles as the City and Fortwo models.

Timing Chains

Despite information in the media that might suggest otherwise, timing chains (which are used on many engines instead of timing/cam belts) DO NOT LAST FOREVER. We STRONGLY RECOMMEND that on smart cars, particularly the 700cc models, the timing chain is replaced every 75,000. We are seeing engine failures on 700cc cars that would have been alleviated had this work been done. We offer a fixed price timing chain replacement service for £535 on City/Fortwo models, slightly more on the Sports cars.

The timing chains rarely break, but the associated guide rails are known to fail especially on the 700cc engines. Replacement is recommended at 75,000 miles.










Please see our Pricing page for information on costs. If you can’t see the information you are looking for, please don’t hesitate to call us on 0121 632 6070.

Updated: November 2021