2007 Porsche Cayman — dyno numbers changed more than the car feels
2007 Porsche Cayman S, about 96,000 miles. Two dyno sessions on different days show a noticeable power difference, but the car feels the same. How much can tem…
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Need advice: Civic tune reliability: what data should owners actually track?
There are plenty of tuned cars running around, but I'm more interested in long-term data than dyno numbers. If you were maintaining a reliability log, what wou…
ColdStartCollector64Community StarterAug 19, 20262025 Honda Civic Sport Touring HybridLos Angeles0 replies0 helpful
First used oil analysis — what should I care about?
2023 Hyundai Ioniq 5 Limited, about 78,000 miles. Thinking about sending an oil sample in mostly to establish a baseline. For a normal street car, which number…
2018 Cadillac CTS-V — brake fluid is old but still looks clean
2018 Cadillac CTS-V, about 118,000 miles. Fluid looks clear in the reservoir but has been in the car for several years. Would you change based on time/moisture…
2021 Mazda CX-5 — steering wheel shakes only under highway braking
Cruising is smooth, but braking from highway speed makes the steering wheel shake. Pads still have material. Would you start with rotor runout/thickness variat…
CX-5 turbo oil level drops before service interval
2021 Mazda CX-5 Turbo, about 78,000 miles. I'm seeing the oil level fall enough between services that I now check it regularly. No obvious leak. For other turb…
2025 Porsche Macan Electric 4S — one-year ownership: things reviews never mentioned
After a year, the things I care about aren't horsepower or 0–60 anymore. Seat comfort, camera behavior, storage, rattles, HVAC logic and service experience mat…
2023 Toyota 4Runner — single clunk over small sharp bumps
This started as a small annoyance and I finally decided to track it down. 2023 Toyota 4Runner TRD Pro, about 20,000 miles. There is one front-end clunk over po…
2024 Subaru WRX — 0 percent promo versus a cash rebate
Manufacturer offers promotional financing or a cash incentive. What is the right way to calculate which one is worth more over my expected payoff period?
Anyone else: Porsche Cayman purchase: how much weight do you give a borescope?
Looking at an older Cayman S with good records. I keep seeing buyers emphasize borescope/PPI work on this generation. For someone vetting listings, what would…
2024 Tesla Model Y — rear tires are disappearing faster than expected
2024 Tesla Model Y Long Range, about 16,500 miles. The car is aligned and pressures are correct, but rear tire life is much shorter than my previous gas cars.…
2023 Jeep Wrangler Rubicon — used truck versus new compact pickup
2023 Jeep Wrangler Rubicon, about 37,000 miles. Same money buys an older full-size truck with capability I may never use or a newer compact truck with better f…
Car hesitates once, then drives normally
1968 Ford Mustang Fastback, about 4,800 miles. Every few days I get a brief hesitation pulling away from a stop. It feels like the engine cuts power for half a…
2021 Chevrolet Silverado 1500 LTZ 6.2 — cPO luxury SUV or brand-new mainstream SUV?
Budget works for either a lightly used luxury SUV or a new mainstream model with a full warranty. I'm more worried about three-to-five-year ownership cost and…
TorqueWrench20Community StarterFeb 27, 20262021 Chevrolet Silverado 1500 LTZ 6.2Denver / Front Range0 replies0 helpful
2017 Jeep Grand Cherokee — two nearly identical cars are priced $4k apart — second opinion before I spend money
2017 Jeep Grand Cherokee Limited, about 142,500 miles. Same year, trim and similar mileage, but two listings are thousands apart. One is CPO and one is not. Ho…
BoostScout146Community StarterApr 3, 20262017 Jeep Grand Cherokee LimitedWestchester0 replies0 helpful
2018 Cadillac CTS-V — going one inch smaller for winter wheels — anyone dealt with this recently?
2018 Cadillac CTS-V, about 65,000 miles. I want smaller winter wheels for more sidewall. Overall tire diameter can stay close, but I am worried about caliper a…
2022 Tesla Model 3 Long Range — used truck versus new compact pickup
Same money buys an older full-size truck with capability I may never use or a newer compact truck with better fuel economy and warranty. Anyone make this switc…
2024 Jeep Gladiator — rough idle disappears just above idle speed
Idle has a slight shake once fully warm, but 100–200 RPM above idle it smooths out. No major loss of power. Would you look at mounts, vacuum leaks, ignition or…
Question: One-year ownership: things reviews never mentioned
After a year, the things I care about aren't horsepower or 0–60 anymore. Seat comfort, camera behavior, storage, rattles, HVAC logic and service experience mat…
2024 Mercedes-Benz C-Class — humming rises with road speed, not engine RPM
2024 Mercedes-Benz C-Class C300, about 20,000 miles. There is a low hum that rises with road speed regardless of engine RPM.
ManualDaily690Community StarterMay 20, 20262024 Mercedes-Benz C-Class C300Long Island0 replies0 helpful