The BMW Z4 is a two-seater built from 2003 to 2026 over 4 generations. Most were assembled in the United States — 94.6% of those on record. Between 2003 and 2023 it grew 25 cm longer and gained 241 kg. Engines offered: 4-cyl, V6. Worth buying? It holds up well, with the usual caveat about model years at 4.0/5 — and the year you pick matters far more than the badge (best and worst years →).
What the Z4 is
The BMW Z4 is a two-seater that BMW built from 2003 to 2026 — 24 model years. Our measurements put it at 4 generations, the current one starting in 2020. It has been offered with 4-cyl, V6 power. Its closest siblings in the BMW range: Z3, Z8.
Where the Z4 is built
A badge says where the company is registered; the VIN says where the car was bolted together. We counted the first three characters — the manufacturer identifier — across 1,078 Z4s on record.
| Assembled in | Share | VIN starts with | Years seen |
|---|---|---|---|
| the United States | 4US | 2003-2008 | |
| Germany | WBA, 5UM | 2003-2022 |
Check your own: the first three characters of a BMW VIN decide which of these 4 lines your Z4 belongs to. What every character in a Z4 VIN means →
Got the full 17 characters? A free VIN check on a BMW Z4 adds what the decoder can't see: open recalls, theft and total-loss records, and the safety ratings for that exact build.
Z4 generations, and what changed
These boundaries are not copied from a brochure — they fall out of the measurements. Where the Z4's length or wheelbase jumps between consecutive model years the platform changed: a facelift moves a bumper by centimetres, a new generation moves the whole car — for the Z4 that gives 4 distinct generations below.
| Generation | Length | Wheelbase | Weight | vs previous | Weight change |
|---|---|---|---|---|---|
| 2003-2005 | 409 cm | 250 cm | 1330 kg | - | - |
| 2008 | 409 cm | 249 cm | 1370 kg | +0 cm | +40 kg |
| 2011-2017 | 424 cm | 250 cm | 1470 kg | +15 cm | +100 kg |
| 2020-2023 | 434 cm | 247 cm | 1571 kg | +10 cm | +101 kg |
Between 2003 and 2023 the Z4 gained 25 cm in length (+6.1%) and 241 kg in weight (+18.1%). Cars did not so much grow as thicken — crash structures, airbags and equipment weigh more than the metal they replaced, and on the Z4 that is 241 kg against 25 cm. Full dimensions by year →
BMW Z4 tire size, oil type & owner specs
The fitment Z4 owners look up most — tires, wheels, oil and batteries. Exact wheel and tire sizes decode from your VIN or the driver's door-jamb placard; the universal items are listed below.
Exact tire, wheel, oil grade, capacity and battery group are added per trim and model year — decode your VIN above for the factory fitment. Universal items shown as-is.
What engines does the BMW Z4 have? Power & range
The BMW Z4 is offered with 2 powertrains — 3L 6-cyl, 2L 4-cyl. Here's the lineup by engine, transmission and drivetrain — 2 for the BMW Z4, against one or two on most rivals.
| Engine | Displacement | Transmission | Drive | Fuel |
|---|---|---|---|---|
| V6 | 3.0L · 6-cyl | Automatic (S8) | RWD | Premium |
| 4-cyl | 2.0L · 4-cyl | Automatic (S8) | RWD | Premium |
Horsepower, torque and fuel-tank size decode from your VIN — exact figures vary by engine and trim.
Source: EPA fueleconomy.gov (engines, drivetrain, range, charge time). Horsepower & torque from NHTSA vPIC on VIN decode.
The Z4 by the numbers
What the federal and market records say about the BMW Z4. Each line opens the full breakdown by year.
| Topic | Z4 | Detail |
|---|---|---|
| Recalls | 68 campaigns | NHTSA, all years |
| Owner complaints | 1,206 filed | What breaks and when |
| Reliability | 4.0 / 5 | Best and worst years |
| Insurance | $1,096/yr | Estimated full coverage |
| Used value | 381 listings | What it sells for now |
Frequently asked questions
What kind of car is the BMW Z4?
The Z4 is a two-seater, built from 2003 to 2026 across 4 generations. Engines offered: 4-cyl, V6.
Where is the BMW Z4 made?
Across 1,078 cars in our records the split is: the United States (94.6%), Germany (5.4%). The first three characters of a VIN identify the plant's manufacturer and country — that is where these shares come from, not from a press release.
How many generations does the Z4 have?
4 by our measurements, the latest starting in 2020. We draw the boundaries where length or wheelbase jumps between model years — a facelift moves a bumper, a new generation moves the whole car. Over its life the Z4 grew 25 cm longer and gained 241 kg.
What is the BMW Z4 warranty?
New models carry 4 years / 50,000 miles basic cover and 4 years / 50,000 miles on the powertrain. Worth knowing: across our complaint records the typical car reaches the halfway point of its faults at five years, so most repairs land after the basic warranty ends.
Is the Z4 reliable?
It scores 4.0/5 in our data. The honest answer depends on the year far more than the model — see the best and worst years, and when this car starts to break.
How do I check a specific Z4?
This page describes the model; it cannot tell you whether that car has an open recall or a branded title. Run its VIN against the records — free, and matched to the exact production run.
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