Pulse Reviews and Analysis
Best BMW Z4 Model Years (Ranked)
Curated by Kory White · Fractional CRO, CRO Syndicate
Best BMW Z4 Model Years (Ranked)
The BMW Z4 is a rear-wheel-drive roadster that has spanned three distinct generations since 2003, evolving from a sharp, hydraulically steered E85/E86 into a folding-hardtop E89 and finally the modern, soft-top G29 co-developed with the Toyota Supra. Across that history the Z4 has offered everything from frugal four-cylinder turbos to a screaming 3.0L inline-six and even a high-strung M variant.
For used buyers, the right choice hinges on which generation, which engine, and which year you target, because reliability, driving character, and value vary widely. Some years carry well-known cooling, electronics, and timing-related concerns, while others are remarkably durable.
This ranking covers the best Z4 model years, their engines, the issues to verify, and where the smart value sits today.
Direct Answer
The best overall BMW Z4 is the 2019-2024 third-generation G29 sDrive M40i, which pairs a robust B58 3.0L turbocharged inline-six (382 hp) with a refined chassis, modern technology, and the strongest reliability record in the model's history. For shoppers focused on value, the best value is the 2009-2011 first E89 with the naturally aspirated 3.0L (sDrive30i/35i), which delivers a retractable hardtop, strong performance, and roadster appeal at a low used price.
Be cautious with early N20/N26 four-cylinder turbos (timing chain) and the E85 with the N52 during cooling-system age, and always verify service history and recall completion through the VIN before buying any Z4.
1. 2019-2024 Third Generation (G29) sDrive M40i 🏆 BEST OVERALL
The third-generation Z4 is the nameplate's high point. The sDrive M40i uses BMW's celebrated B58 3.0L turbocharged inline-six producing 382 horsepower, paired with a quick-shifting eight-speed automatic and an electronically locking differential. It is genuinely fast, hitting 60 mph in about 3.9 seconds, while remaining comfortable enough for daily use.
The B58 has earned a reputation as one of BMW's most reliable modern engines, a major step up from earlier turbo fours.
This generation also brought a more rigid chassis, adaptive suspension, and current iDrive infotainment. It is the Z4 to buy if your budget reaches a recent used example, offering the best blend of speed, refinement, technology, and dependability in the model's entire run.
2. 2009-2011 First E89 — 3.0L (sDrive30i/35i) 💎 BEST VALUE
The first E89-generation Z4 is the value champion. It introduced a retractable hardtop that turned the roadster into a snug coupe, and the early cars offered the smooth naturally aspirated 3.0L inline-six in the sDrive30i and the twin-turbo 3.0L (N54) in the sDrive35i with up to 300 hp.
The hardtop adds security and refinement no soft-top rival matched.
The best value is a 2009-2011 sDrive30i, which sidesteps the N54's higher maintenance demands while delivering classic inline-six character and roadster style at a used price well below comparable Porsche and Mercedes roadsters. Maintained examples are durable and rewarding.
3. 2019-2024 Third Generation (G29) sDrive30i
The four-cylinder sDrive30i version of the G29 deserves its own spot for delivering most of the new Z4's appeal at a lower price. It uses the B48 2.0L turbocharged four-cylinder making 255 horsepower, enough for a 0-60 time around 5.2 seconds, with the same modern chassis, adaptive options, and current infotainment as the M40i.
It returns notably better fuel economy.
The B48 is a dependable modern engine with a far better track record than the earlier N20 it replaced. For a buyer who wants the latest Z4 design, technology, and reliability without paying inline-six money, a clean sDrive30i is a smart, lower-cost entry into the newest generation.
4. 2012-2016 First E89 (Refreshed) — sDrive28i/35i
The refreshed E89 brought updated styling, an eight-speed automatic option, and the turbocharged 2.0L (N20) in the sDrive28i alongside the carryover 3.0L turbo in the sDrive35i. The retractable hardtop remained a standout feature, and the cabin gained newer technology.
The sDrive35i with the N55 single-turbo six (300 hp) is the strong performer here and a more refined turbo than the older N54.
The caution is the N20 four-cylinder's timing-chain concern on higher-mileage cars, which can require attention. A documented N20 or a clean sDrive35i makes a rewarding, hardtop-equipped used roadster with modern power.
5. 2006-2008 E85/E86 — 3.0si (N52)
The later first-generation Z4 with the 3.0si badge used BMW's excellent N52 3.0L inline-six (255 hp), a magnesium-aluminum engine praised for its smoothness and strong power. This roadster (E85) and coupe (E86) offered sharp, communicative handling, classic long-hood proportions, and a pure driving feel that many enthusiasts prefer to the later cars.
These are aging vehicles now, so inspect the cooling system, valve cover gaskets, and electronics, all common age-related items on the N52. The upside is engaging dynamics at an affordable price. A well-kept 2006-2008 3.0si, especially the rare E86 coupe, is a charismatic enthusiast buy with a proven engine.
6. 2006-2008 Z4 M (E85/E86 M Roadster/Coupe)
The Z4 M is the enthusiast's halo car, fitting the S54 3.2L inline-six from the E46 M3, a high-revving naturally aspirated engine making around 330 hp with a six-speed manual. It is raw, fast, and hugely engaging, and the M Coupe in particular has become a collectible with rising values.
The trade-off is maintenance: the S54 requires diligent care, including rod-bearing inspection and VANOS service, and neglected examples are expensive to fix. Buy only with full documentation of these items. For a buyer who wants the most thrilling, most special Z4 and is prepared for its upkeep, a healthy Z4 M is the standout driver's car of the lineup.
7. 2003-2005 E85 — 3.0i (M54)
The original Z4 launched with the 3.0L M54 inline-six (225 hp) in the 3.0i, available with a slick six-speed manual or automatic. It replaced the Z3 with sharper styling, a stiffer body, and BMW's first use of electric power steering, which some drivers find less communicative than hydraulic setups but most still enjoy.
The M54 is a durable, well-understood engine with a strong reputation.
As an older car, expect to address cooling-system components, the convertible top motor, and suspension bushings. Pricing is low, making a clean 2003-2005 3.0i an affordable way into open-top inline-six motoring for buyers who value mechanical simplicity and proven durability.
8. 2003-2005 E85 — 2.5i (M54)
The entry 2.5i used a smaller 2.5L M54 inline-six (around 184 hp), offering the same handsome roadster styling and rear-drive balance at a lower running cost. It is slower than the 3.0i but still smooth and engaging, and the six-cylinder character is a highlight at this price point. It shares the generation's durable M54 architecture.
The same age-related items apply: cooling system, convertible top mechanism, and worn bushings. For a budget buyer who wants inline-six smoothness and classic Z4 looks without paying for the bigger engine, a well-maintained 2.5i is a sensible, affordable open-top choice, though the 3.0i is worth the small premium when available.
9. 2009-2016 E89 sDrive35is
The sDrive35is was the E89's performance flagship, a tuned version of the twin-turbo 3.0L N54 producing about 335 hp with an overboost function, paired with a seven-speed dual-clutch transmission. It is the quickest pre-G29 Z4, with sharper styling cues and upgraded cooling, delivering genuine sports-car pace under the hardtop.
The caution is the N54's higher maintenance burden, including potential high-pressure fuel pump, injector, and wastegate issues if not serviced. Buy one only with documented repairs and a clean history. For an enthusiast who wants the most powerful folding-hardtop Z4 and accepts the upkeep, a well-sorted sDrive35is is fast and distinctive, but it demands a careful inspection.
10. 2012-2016 E89 sDrive28i (N20, Caution)
The sDrive28i brought BMW's N20 2.0L turbocharged four-cylinder (240 hp) to the Z4, offering good performance and better fuel economy than the sixes. It is capable and enjoyable when healthy, with strong mid-range torque and the convenience of the retractable hardtop.
The reason for caution is the N20's known timing-chain and chain-guide wear, which on neglected or high-mileage examples can lead to expensive repairs, along with oil-consumption and valve-cover concerns. Only buy one with documentation that the timing chain was inspected or replaced and oil-service history is complete.
Otherwise, the inline-six versions of the E89 are the more rewarding and lower-risk choices for most buyers.
What to Watch For When Buying
The most important step when buying a used Z4 is to match the engine to its known concerns. On the E89 sDrive28i and early G29 N20-based cars, verify the timing chain has been inspected or serviced, since chain-guide wear is the generation's signature issue. On N54 turbo cars (sDrive35i/35is), confirm the high-pressure fuel pump, injectors, and wastegates are healthy and serviced.
On E85/E86 inline-six cars (M54/N52), inspect the cooling system, water pump, valve-cover and oil-filter-housing gaskets, and the convertible-top motor. For the Z4 M (S54), demand documentation of rod-bearing inspection and VANOS service. Across all years, run the VIN through NHTSA and BMW recall lookups, confirm the top and any folding hardtop cycle properly, and prioritize a complete maintenance record over a low price.
How to Choose
Match the Z4 to your priorities. For the best blend of speed, refinement, and reliability, the 2019-2024 G29 M40i is the answer, with the sDrive30i as a lower-cost path to the same modern car. For the best value with roadster appeal and a hardtop, a 2009-2011 E89 sDrive30i is hard to beat.
Enthusiasts chasing pure driving feel should target a 2006-2008 3.0si or, for the ultimate experience and rising values, the Z4 M. Budget buyers can consider an early E85 3.0i or 2.5i for affordable inline-six motoring. In every case, favor documented service history and verify the engine-specific items above before committing.
FAQ
Which BMW Z4 years are the most reliable? The 2019-2024 G29 with the B58 inline-six or B48 four-cylinder has the strongest reliability record. Among older cars, the naturally aspirated M54 and N52 inline-sixes in the E85/E86 are well-regarded when cooling-system maintenance is kept up.
Which BMW Z4 engine should I be cautious about? The N20 2.0L turbo (E89 sDrive28i and early G29) is known for timing-chain wear, and the N54 twin-turbo (sDrive35i/35is) has higher maintenance demands. Buy these only with documented service history.
Is the BMW Z4 M a good buy? Yes for enthusiasts prepared for its upkeep. The S54-powered Z4 M is thrilling and increasingly collectible, especially the M Coupe, but it requires diligent rod-bearing and VANOS maintenance, so full documentation is essential.
Does the Z4 have a hardtop? The first-generation E85/E86 used a soft top (E85) or fixed coupe roof (E86), the second-generation E89 used a retractable hardtop, and the third-generation G29 returned to a fabric soft top. Choose based on whether you prefer hardtop security or soft-top simplicity.
Bottom Line
The BMW Z4 is a rewarding rear-drive roadster, but engine and generation choice is critical to a good ownership experience. The 2019-2024 G29 M40i is the best overall pick, with the durable B58 inline-six and modern refinement, while the 2009-2011 E89 sDrive30i offers the best value with its retractable hardtop.
Enthusiasts should seek the 3.0si or the collectible Z4 M, and all buyers should verify the engine-specific concerns and service history through the VIN. Choose carefully and the Z4 delivers open-top driving fun at a price that undercuts most rivals.
Sources
- BMW official Z4 model history and specifications, bmwusa.com
- NHTSA recall database for BMW Z4 by model year, nhtsa.gov
- EPA Fuel Economy ratings for BMW Z4 by model year, fueleconomy.gov
- Edmunds BMW Z4 generation reviews and used-car appraisals, edmunds.com
- Kelley Blue Book BMW Z4 used values by model year, kbb.com
- Car and Driver BMW Z4 reviews and specifications, caranddriver.com
- Wikipedia BMW Z4 generations and technical specifications, en.wikipedia.org