I'm looking for a used sporty sedan that's fun to drive but won't leave me stranded. My budget is around $35k, and I want something with decent power, a nice interior, and strong reliability. Which models should I consider?

Based on the owner data available, the Acura TLX is the only candidate with concrete information, and it doesn’t fully match what you’re after. The TLX is a practical, durable sedan with strong reliability and a nice interior, but its transmission issues make it a poor fit for a fun-to-drive experience. Without owner data for the Mazda 6, I can’t assess its reliability or performance for your budget.

The Acura TLX (2015-2025) typically sells used for $15,725-$28,500, well within your $35k budget. Owners highlight the V6 SH-AWD A-Spec (2018-2020) as the best version for power. However, the biggest complaint is the jerky, rough transmission shifting, both the 2.4L 8-speed DCT and V6 9-speed automatic have harsh shifts in 1st-4th gears, bucking at low speeds, and abrupt downshifts. Owners say this is an inherent characteristic that software updates or fluid changes can’t fix. Frequent transmission fluid drain-and-fills every 15,000-30,000 miles are critical to prevent catastrophic failure. This kills the fun factor for an enthusiast driver like you. The TLX also has cascading electrical warning lights as a common issue. It suits practical buyers who prioritize reliability and longevity over driving engagement, not someone seeking a sporty sedan.

For your situation, $35k, wanting fun driving, decent power, nice interior, and strong reliability, the TLX falls short on the fun part due to its transmission. I’d recommend looking at other models with better owner data, like a BMW 3 Series or Cadillac ATS, which owners report as more engaging. Without data on the Mazda 6, I can’t suggest it. Stick to vehicles with proven reliability and sharp driving dynamics from owner reports.