Volvo XC40 Exhaust System: Specs, Fitment & Common Faults
On the XC40, cracked catalytic converters on related models have genuinely been traced to poor factory welding and successfully repaired by welding rather than full replacement.
Illustration for editorial purposes
Opens live listings in a new tab.
Volvo XC40 Exhaust System: OEM Part Number
| Front pipe with catalytic converter (petrol) | Genuinely a different part from the diesel front pipe below (where fitted) — confirm your exact engine code before ordering |
|---|---|
| Front pipe with diesel particulate filter (diesel, where fitted) | A genuinely different assembly from the petrol cat pipe, combining catalytic and particulate filtration in one unit |
| Centre/intermediate pipe | A genuinely separate section from both the front pipe and rear silencer |
| Rear silencer, front-wheel drive | A genuinely different silencer and mounting arrangement applies versus AWD variants — the underbody routing differs enough that the two aren't interchangeable |
| Rear silencer, AWD | A genuinely different silencer and mounting from the front-wheel-drive version above, to clear the rear differential and driveshaft routing |
| Polestar/T8 performance rear silencer | A genuinely different, larger-bore system from the standard variant — not a like-for-like swap with the standard rear silencer |
Volvo XC40 Exhaust System: The Part That Announces Its Own Problems
Where a lot of Volvo XC40 parts fail silently until you spot something visually wrong, this one tends to make noise first — a rattle, a drone, an audible change that wasn't there recently. That's a useful early-warning system if you're paying attention.
Volvo XC40 Exhaust System: What It Does
Away from the engine, through the silencer, and often through a catalytic converter and particulate filter before reaching the tailpipe — that's the Volvo XC40's exhaust job in three steps. Petrol and diesel versions frequently need different systems entirely, since their emissions treatment isn't the same.
Opens live listings in a new tab.
A Genuinely Useful Piece of Context Worth Knowing About Catalytic Converter Cracks — Volvo XC40 Exhaust System
If a catalytic converter has developed a crack, this is genuinely worth knowing: documented cases on related Volvo models trace this to low-quality factory welding, with owners successfully repairing the crack by welding it themselves rather than paying for full replacement.
It's also worth knowing that stopping the engine partway through a DPF regeneration cycle can let diesel fuel dilute the engine oil, worth bearing in mind if your driving is mostly short journeys.
Volvo XC40 Exhaust System: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Exhaust System Guide for warning signs and fault codes to watch for, confirming fitment against your VIN, and which aftermarket brands are worth trusting.
More Volvo Exhaust System
The same part, covered across other Volvo models.