Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2023 Z4.
The 2023 BMW Z4 returns with an eight-speed automatic transmission and EPA ratings of 23/31/26 mpg, marking a model year that logged just six owner complaints — a fraction of the 414 seen at the nameplate's 2003 peak yet a slight uptick from the single complaint recorded in 2022. Across the 2002–2023 history, this places the current generation near the bottom of the complaint curve, though three recalls and a concentration of reports around seat belts temper the otherwise clean reliability picture.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 94R · 800 CCA battery, OE oil filter 11429886567. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
| Engine oil filter | 11429886567 alt 11428583896 |
| Engine air filter | 13718580428 alt 13718635102 |
| Spark plug | 12122455258 |
| Battery | 61215B3F325 alt 61216806755 |
| Front wiper blades | 61618492538 |
| Thermostat | 11539468021 alt 11539494424 |
| Cabin air filter | 64119382886 alt 64119382885 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S8) |
| Overall length | 170.9 in |
| Overall width | 73.2 in |
| Overall height | 51.6 in |
| Wheelbase | 97.2 in |
| Curb weight | 3463 lb |
| Track (front / rear) | 63.8 / 63.4 in |
| Weight distribution (front / rear) | 51/49 |
| EPA city / highway / combined | 23 / 31 / 26 mpg |
| Drivetrain | Rear-Wheel Drive |
| Recommended fuel | Premium Gasoline |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the Z4 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.
| Year | Trim / engine | 0–60 | ¼ mile | HP | Drivetrain |
|---|---|---|---|---|---|
| 2023 | M40i Roadster 3.0L Turbo I-6 | 3.50 sec | 12.00 sec | 382 hp | RWD |
| 2025 | M40i Roadster (Shadowline) 3.0L Turbo I-6 | 3.90 sec | 12.40 sec | 382 hp | RWD |
| 2025 | M40i Roadster (Shadowline) 3.0L Turbo I-6 | 4.10 sec | 12.60 sec | 382 hp | RWD |
| 2020 | M40i Roadster 3.0L Turbo I-6 | 3.80 sec | 12.30 sec | 382 hp | RWD |
| 2020 | M40i Roadster 3.0L Turbo I-6 | 3.90 sec | 12.30 sec | 382 hp | RWD |
| 2020 | M40i Roadster 3.0L Turbo I-6 | 3.90 sec | 12.40 sec | 382 hp | RWD |
| 2019 | sDrive30i Roadster (M Sport) 2.0L Turbo I-4 | 5.10 sec | 13.80 sec | 255 hp | RWD |
| 2019 | sDrive30i Roadster (M Sport) 2.0L Turbo I-4 | 5.20 sec | 13.80 sec | 255 hp | RWD |
Capacities, torques and tune-up values from the factory service manual.
| Standard BCI Group Number | 94R |
| Standard BCI Cranking Performance | 800 cca |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The current generation of the BMW Z4 (2019–2023) shows a consistent downward trend in federal quality issues. While the 2019 and 2020 models saw up to six recalls and 242 TSBs, the 2023 model year has seen these figures drop to just two recalls and 36 TSBs. The federal record reports zero complaints for 2023, though the detailed breakdown notes a small number of reports involving seat belts, the electrical system, the power train, and back-over prevention. The data does not specify the root causes for these specific issues. Positioning the 2023 model at the end of this arc suggests a significant refinement in reliability compared to earlier years in the generation. Given the minimal complaint volume and the lowest number of recalls and TSBs in this series, the 2023 model is an excellent year to buy.
All 6 complaints on record, top 5 components.
Source: NHTSA Office of Defects Investigation complaint database.
No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.
Showing 5 of 76 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B010126 | 2026-05-06 | Engine | The EVAP systems purge (vent) valve limited warranty for defects in materials and / or… |
| B652025 | 2026-05-05 | Electrical System | After replacing the Multifunctional Display (MFD), the Central Information Display (CID)… |
| B510626 | 2026-04-23 | Structure | While driving on rough surfaces, a “tapping” noise can be heard from the tailgate area |
| B512222 | 2025-09-17 | Structure | Hood lever is pulled twice but the hood only achieves the pre-latch position on both… |
| B410725 | 2025-08-20 | Structure | While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 23 city / 31 highway / 26 combined mpg.