2018 Infiniti Q50 — surface rust underneath a winter daily
2018 Infiniti Q50 Red Sport, about 126,500 miles. There is early surface rust on brackets, fasteners and seams underneath, but nothing structural. For a salt-b…
3 owner reports for this model.
Infiniti Q50
2018 Infiniti Q50 — delayed engagement into Drive when cold — Phoenix owner
After sitting overnight, shifting from Park to Drive can take a second or two before the vehicle actually engages. Once warm it behaves normally. Would you sta…
LongMilesCommuter998Community StarterSep 4, 20262018 Infiniti Q50 Red SportPhoenix5 replies0 helpful
2018 Infiniti Q50 — surface rust underneath a winter daily — Salt Lake City owner question
There is early surface rust on brackets, fasteners and seams underneath, but nothing structural. For a salt-belt car, what treatment slows it down without crea…
SleeperEnthusiastCommunity StarterSep 4, 20262018 Infiniti Q50 Red SportSalt Lake City5 replies0 helpful
2018 Infiniti Q50 — delayed engagement into Drive when cold
2018 Infiniti Q50 Red Sport, about 76,500 miles. After sitting overnight, shifting from Park to Drive can take a second or two before the vehicle actually enga…
2018 Infiniti Q50 — lower mileage or better documentation?
2018 Infiniti Q50 Red Sport, about 124,500 miles. I am comparing two older enthusiast cars. One has lower mileage but thin records; the other has more miles an…
2018 Infiniti Q50 — buzzing noise only at one engine RPM
This started as a small annoyance and I finally decided to track it down. 2018 Infiniti Q50 Red Sport, about 106,000 miles. There is a light buzz from the dash…
2018 Infiniti Q50 — oil level drops between services with no puddle
2018 Infiniti Q50 Red Sport, about 29,500 miles. I started measuring the oil level every few hundred miles and it is definitely falling between changes. There…
2018 Infiniti Q50 — what current car has future-classic potential without hype?
2018 Infiniti Q50 Red Sport, about 131,000 miles. Ignoring limited-production supercars, which current or recent cars have the ingredients collectors may care…
2018 Infiniti Q50 — is this actually a good used-car deal?
2018 Infiniti Q50 Red Sport, about 60,000 miles. The online price looks competitive, but I am trying to judge the entire deal rather than the headline number.…
2018 Infiniti Q50 — clutch engagement changed after a long traffic commute
2018 Infiniti Q50 Red Sport, about 140,500 miles. After a hot stop-and-go commute the clutch engagement point felt different, but it returned to normal later.
2018 Infiniti Q50 — vibration under acceleration but not while coasting
The car is smooth at the same road speed when I lift off, but under moderate acceleration I can feel a vibration through the floor. What would you inspect firs…
2018 Infiniti Q50 — driver seat clicks during left-right transitions
2018 Infiniti Q50 Red Sport, about 94,500 miles. I can feel a small click through the seat base in corners. Mounting bolts appear tight and power functions wor…
ColdStartLearner641Community StarterMay 29, 20262018 Infiniti Q50 Red SportOrange County3 replies0 helpful
2018 Infiniti Q50 — coolant slowly disappears without an obvious leak
2018 Infiniti Q50 Red Sport, about 87,500 miles. The reservoir goes from full to low over several weeks. No puddle, oil looks normal, and I cannot find dried c…
2018 Infiniti Q50 — light-throttle shudder around 35–45 mph
2018 Infiniti Q50 Red Sport, about 138,000 miles. There is a rumble-strip-like shudder at steady light throttle in a narrow speed range.
2018 Infiniti Q50 — single clunk over small sharp bumps
There is one front-end clunk over pothole edges and driveway lips, but larger smooth bumps do not reproduce it. How would you isolate end links, strut mounts,…
2018 Infiniti Q50 — car died once at a light and restarted immediately
2018 Infiniti Q50 Red Sport, about 46,500 miles. The engine shut off at a stop once, restarted right away, and has been normal since. No warning stayed on. Wha…
2018 Infiniti Q50 — check-engine light turned itself off — still scan it?
This started as a small annoyance and I finally decided to track it down. 2018 Infiniti Q50 Red Sport, about 72,000 miles. The light was on for two days and th…
TrackEnthusiastCommunity StarterMay 9, 20262018 Infiniti Q50 Red SportOrange County23 replies0 helpful
2018 Infiniti Q50 — brake fluid is old but still looks clean
2018 Infiniti Q50 Red Sport, about 124,000 miles. Fluid looks clear in the reservoir but has been in the car for several years. Would you change based on time/…
TowEnthusiast655Community StarterApr 30, 20262018 Infiniti Q50 Red SportSan Antonio4 replies0 helpful
2018 Infiniti Q50 — square wheel setup on a car that came staggered
2018 Infiniti Q50 Red Sport, about 35,500 miles. I am considering a square wheel/tire setup so I can rotate tires and simplify track spares. Besides clearance,…
2018 Infiniti Q50 — no crank with full dash power, then it starts later
2018 Infiniti Q50 Red Sport, about 95,000 miles. Twice I have had full lights and accessories but no crank. After waiting a few minutes it starts normally. Bat…
ShopEnthusiast239Community StarterApr 19, 20262018 Infiniti Q50 Red SportCharlotte5 replies0 helpful