I've noticed my Wrangler feels a bit sluggish lately, especially when I'm trying to accelerate onto the highway, and my fuel economy has taken a noticeable hit over the past few weeks. I've also started getting a whiff of that rotten egg smell from the exhaust occasionally, which I've read can be a sign that the catalytic converter is failing. I'm in the MBZ City area and I'm looking for a shop that can properly diagnose the issue, not just throw parts at it. A colleague mentioned a place that offers Reliable Jeep Catalytic Converter Repair in MBZ City, but I'm curious if anyone here has used them or another specialist in the area. I'm wondering if I should be looking at a proper diagnostic that checks the oxygen sensors and exhaust system as a whole, because I've heard that sometimes a bad sensor can cause the converter to fail prematurely. Any advice or local recommendations would be greatly appreciated. Cheers.

Rotten egg smell combined with power loss and worse fuel economy is a pretty classic catalytic converter symptom pattern honestly. The three together rather than just one in isolation makes the diagnosis more straightforward than it might otherwise be.

Your instinct about checking oxygen sensors alongside the converter is exactly right and worth insisting on before any parts are replaced. A failing upstream O2 sensor can cause the converter to run rich and overheat which destroys the converter itself. Replacing the converter without addressing the sensor that caused the failure means the new one fails prematurely for the same reason.

A proper diagnostic that reads live O2 sensor data and checks exhaust backpressure before recommending converter replacement is what separates a thorough diagnosis from guesswork. Backpressure testing specifically confirms whether the converter is actually blocked rather than just assuming from the symptoms. Some workshops skip that step and go straight to replacement which costs significantly more than sensor diagnosis would have if that turned out to be the actual root cause. Asking specifically whether they'll test backpressure before recommending replacement tells you how thoroughly they're approaching it.

Highway acceleration being the most obvious symptom makes sense because that's when backpressure from a clogged converter restricts power most noticeably. Around town at lower throttle demand you'd feel it less.

Fuel economy dropping alongside the power loss confirms the engine is working harder than it should to push exhaust through a restricted system. That increased workload shows up at the fuel pump as well as in how the car feels under load. Getting it properly diagnosed sooner rather than later prevents the prolonged strain from affecting other components beyond just the converter itself.