Published 17 October 2026. General guidance; an inspection of your vehicle is still required.
General guidance cannot confirm that your car is safe to drive. The existing workshop photo does not document the specific fault discussed here.
Compare the same measurement method
A short-term reading after starting, an average since reset and a figure calculated from refuelling are different measures. Record litres, distance and the period, and avoid comparing inconsistent refill methods. The calculation is litres divided by kilometres, multiplied by 100. An illustrative 34 litres over 420 km is about 8.1 l/100 km; this is not a workshop measurement or a target for your vehicle.
Identify changes in use
Note shorter journeys, more stationary traffic, different loads or the use of roof bars or a roof box. Check tyre pressure against the vehicle's specified values and checking conditions. These observations can explain a difference, but do not rule out a fault. Do not use arbitrary higher pressures to chase economy or conduct fuel-saving experiments at the expense of safety.
When a targeted check makes sense
A new, recurring change on similar journeys is more informative, particularly with rough running, poor starting, a warning or loss of power. Checks depend on the engine and accompanying behaviour. One consumption figure does not justify ordering a sensor, injectors or another part. If you also notice dragging or a wheel-area smell, report it as a separate symptom.
Prepare a useful record
Bring the earlier and current measurement methods, when the change began, approximate mileage, normal journey types and consecutive fuel records if already available. You do not need to publish precise journey addresses or identity documents. Mention recent service work and any dashboard-average reset. A photo of the display can help, but needs the period over which its average was calculated.
When not to wait for the next fuel stop
A fuel smell, visible leak, smoke, overheating, severe rough running or a red warning changes this from an economy comparison into a safety concern. Stop safely and arrange advice; do not collect more mileage just to improve the average. Call emergency assistance for fire or immediate danger. Do not attempt home tests of the fuel system.
A check is not a guaranteed fuel saving
The price list advertises basic diagnostics and fault-memory reading from CZK 400. This is not the full price of investigating every consumption problem or a promise that reading codes resolves it. Have the initial scope and approval of further work confirmed for your car. No percentage reduction or fixed repair price can be promised without establishing the cause.
Frequently asked questions
Does higher consumption always mean an engine fault?
No. Compare measurement methods and driving conditions first; a persistent change and associated symptoms then guide checks.
Should I try an additive first?
Its benefit cannot be promised without understanding the cause. A product or a code reset does not replace appropriate checks.
Agree the next step with the workshop
Autoservis 1 is at Unhošťská 92, Červený Újezd, near Unhošť, Hostivice, Kladno and Prague-West. For acute safety concerns, call rather than waiting for an email reply. An enquiry does not confirm a price, appointment or that the car can be driven.
Useful details, without unnecessary personal data
Send relevant photos or records by email; the form does not accept attachments. Remove unrelated personal information from documents. Use your phone only when safely stationary.
Send a service enquiryTechnical references and pricing
General technical sources, not a diagnosis of your car. Vehicle-specific instructions take priority.