Failed a Czech emissions test: what to do next

Updated 21 October 2026 · Autoservis 1

Workshop photograph, used to illustrate the topic.

Send the complete report

Keep all pages, including the conclusion and measured results. A clear photo or PDF can be sent by email; the enquiry form has no attachment field. Include the make, model, year, engine if known and any warning light or change in how the car runs.

Emissions and STK findings are different

An emissions result concerns a different set of checks from items such as brakes, lamps or suspension at the Czech STK. Tell the workshop if both inspections found problems. A repair plan should follow the actual reports rather than an assumption that one intervention will resolve everything.

Do not order parts from one code

A diagnostic code identifies an observed condition, not necessarily the failed component. Causes require investigation in the context of the vehicle and results. Erasing codes, replacing parts at random or trying a treatment without identifying the fault can obscure the problem without providing a repair.

Agree the next stage

Ask what the first investigation includes, what evidence will guide the repair and how extra work will be authorised. State any retest deadline printed on your documentation or communicated by the station. This guide does not promise a retest period, a pass or a fixed all-inclusive repair price.

Is it safe to drive in?

A failed test does not itself answer that question. Strong smoke, severe loss of performance, overheating or a red warning require a separate safety decision. Stop safely when necessary and call to discuss transport rather than assuming the car can be driven because a workshop visit is booked.

Prices and service scope

See the current workshop price list. Starting prices do not establish the cause of a fault or the total repair bill.