Research
2021 Porsche Cayman GT4Recalls, problems, MPG & safety
NHTSA lists 0 safety recalls and 1 owner complaint for the 2021 Porsche Cayman GT4. Most complaints involve wheels (1).
Combined MPG
—
No EPA rating found
NHTSA overall
—
Not rated by NCAP
Safety recalls
0campaigns
NHTSA
Owner complaints
1
Top: wheels
Fuel cost / yr
—
No EPA estimate
Safety recalls
NHTSA campaigns for this model year
0 recalls found in NHTSA data for the 2021 Porsche Cayman GT4 as of Oct 31, 2026.
Data from NHTSA Recalls API · synced Oct 31, 2026NHTSA vehicle page
Owner complaints by component
1 complaints filed with NHTSA · Mar 2021 – Mar 2021
- Wheels1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 31, 2026NHTSA vehicle page
What owners report most
Verbatim excerpts from NHTSA complaints, by component
Wheels
1 report
“FAILURE OF THE TIRE PRESSURE MONITORING SYSTEM. SYSTEM REPORTS A NONI-RESETTABLE TPMS MALFUNCTION. PORSCHE TECHNICAL BULLETIN TI 4432 COMPLAINT. DEALER STATES NO SOLUTION FROM PORSCHE NORTH AMERICA”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 31, 2026
NHTSA 5-Star Safety Ratings
New Car Assessment Program
NHTSA has not published 5-Star Safety Ratings for the 2021 Porsche Cayman GT4 as of Oct 31, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Oct 31, 2026
Maintenance basics
General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
- Engine oil & filter5,000–10,000 mi
6–12 months - Tire rotation5,000–7,500 mi
Every oil change - Engine air filter15,000–30,000 mi
1–2 years - Cabin air filter15,000–25,000 mi
1–2 years - Brake fluid—
2–3 years - Coolant60,000–100,000 mi
5–10 years - Spark plugs60,000–100,000 mi
— - 12V battery—
3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
2021 Cayman GT4 questions
How many recalls does the 2021 Porsche Cayman GT4 have?
0 recalls found in NHTSA data as of Oct 31, 2026.
What are the most common 2021 Porsche Cayman GT4 problems?
Owners filed 1 complaints with NHTSA. The most-cited components are wheels (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
Data from NHTSA & EPA · synced Oct 31, 2026