I did a general Google AI search to see if the 2025-26 models have been improved (or updated) in reliability compared to the 2022 models.
If the newer, current-year models were as bad as the 2022 models, the SL would have been pulled from showrooms by now.
Quality and reliability have notably improved on the 2025–2026 Mercedes-AMG SL compared to the 2022 debut models. [1, 2]
When Mercedes-Benz relaunched the SL-Class (R232 generation) in late 2022, it was shifted completely over to the AMG performance division. As a brand-new, highly complex platform, the 2022 and early 2023 models suffered from severe "first-year" production bugs, critical software glitches, and major recalls. [1, 3, 4, 5]
By the 2025 and 2026 model years, Mercedes successfully ironed out most of these early platform growing pains. [1, 6]
What Was Wrong With the 2022 Models?
The earliest vehicles of this generation were heavily plagued by widespread hardware and electronic faults:
- The 12-Volt Battery Drain: This was the most notorious issue. Software bugs frequently prevented the car's computers from entering "sleep mode" when turned off, completely draining the starter battery in a matter of days.
- Wiring Harness Recall: A major National Highway Traffic Safety Administration (NHTSA) recall was issued for 2022–2023 models because the starter/alternator wiring harness was routed incorrectly and could rub against the driveshaft, causing a short circuit and immediate loss of propulsion.
- MBUX Infotainment Glitches: The massive 11.9-inch tilting touchscreen frequently suffered from freezing, total blackouts, and erratic sensor alerts (such as false automatic braking or blind-spot warnings).
- Interior Rattles: Owners commonly complained about prominent dashboard creaks and rattles in the newly designed cabin. [3, 5, 7, 8, 9, 10, 11, 12]
Structural Improvements in 2025–2026 Models
For the 2025 and 2026 model years, the SL-Class benefits from several generational refinements:
- Zero Active Recalls: While the 2022–2023 models have multiple open recalls, the 2025 model year currently carries zero active safety recalls from the NHTSA.
- Resolved Software & Battery Faults: Massive over-the-air (OTA) and dealership-applied firmware updates have stabilized the MBUX system and successfully cured the parasitic battery drain issues.
- Tighter Build Quality: Automotive reviews from Edmunds and critics note that the fit, finish, and structural rigidity have leveled up, with significantly fewer reports of strange cabin rattles and tighter canvas top seals.
- Refined Ergonomics: The 2026 model introduces tactile soft-top control updates to the center console, smoothing out the clunky touch-and-slide digital mechanics that frustrated early buyers. [1, 5, 13, 14, 15, 16, 17, 18, 19]
Summary Comparison
| NHTSA Recalls | High (Wiring harness, fuel pumps, etc.) | Zero reported (As of mid-2026) |
| Battery Dependability | Poor (Frequent dead batteries, required trickle chargers) | Fixed (Resolved via updated power-management firmware) |
| Infotainment & Safety Tech | Buggy (Screen crashes, false sensor triggers) | Stable (Smoother MBUX operation and accurate sensors) |
| Interior Quality | Noticeable dashboard creaks and loose trim pieces | Impeccable build quality and tighter panel gaps |
The Long-Term Reality
While the build quality and electronics have vastly improved, keep in mind that the SL remains a high-performance grand tourer. The complex active anti-roll suspension, multi-material canvas roof mechanism, and highly strung engines (ranging up to the 805-hp SL63 S E Performance hybrid) mean long-term maintenance and out-of-warranty repair costs will still be premium. [4, 16, 19, 20, 21] If you are shopping the used market,
strictly avoid un-repaired 2022 models unless you can verify through service records that all factory software updates and wiring recalls were performed. Buying a brand-new 2025 or 2026 model will give you a vastly more dependable vehicle out of the box. [1, 5]