Car Exhaust Back Pressure Test Cost in UAE (2026)
An exhaust back pressure test measures the restriction in the exhaust system, most commonly to diagnose a blocked or collapsing catalytic converter. A heavily restricted exhaust cannot expel combustion gases efficiently, causing significant power loss, increased fuel consumption, and overheating. In UAE, catalytic converter failure is common due to heat stress and, in some older vehicles, incorrect fuel or misfires that damage the catalyst substrate.
Typical Costs in UAE (2026)
| Service | Estimated Cost (AED) |
|---|---|
| Exhaust back pressure test | 100-250 |
| Catalytic converter replacement (standard) | 400-1,500 |
| Catalytic converter replacement (OEM, European) | 800-4,000 |
| Exhaust section replacement (pipe, muffler) | 200-800 |
A back pressure test is performed by removing the upstream oxygen sensor and fitting a pressure gauge. At idle, back pressure should be very low (under 0.5 psi). Revving the engine should not produce more than 1.5-2 psi. Higher readings confirm a blocked exhaust. The catalytic converter is the most common blockage point, typically crumbling internally and restricting flow through the substrate. On high-mileage UAE vehicles, the oxygen sensor ports and muffler resonators can also become restricted.
Find Exhaust Diagnosis in UAE
Use GarageBuddy to find garages offering exhaust diagnosis and catalytic converter replacement across Dubai, Abu Dhabi, Sharjah, and all seven UAE emirates.