Powertrain families
M88/3 · S38B35
M5 (E28) — Sedan
1984–1988
Editorially reviewedReviewed 2026-08-10; market and model-year scope is stated in the record sources.
- Internal code
- E28
- Production
- 1984–1988
- Body style
- 4-door sedan
- Platform
- BMW M · longitudinal layout · rear-wheel drive
Body variants
M5 → E28 → Sedan
M5 E28: history, design and engineering
How this generation came about, what made it different and how the selected sedan fits into the family.
E28 M5 established the discreet high-performance business sedan formula. Hand assembly combined the regular E28 shell with M-developed suspension, brakes and a six-cylinder derived from the M1 programme, but engine identity and rated output differed between European and emissions-controlled North American cars.
European production used the M88/3, while North America received the S38B35 with catalyst and regional equipment. Gearbox, final drive, standard trim, side of steering and production location must be attached to market rather than inferred from the M5 badge alone.
Published totals vary because South African assembly, pre-series cars and market batches are counted differently. The earlier E12 M535i is an important predecessor but not an E28 M5 generation and needs its own catalog node when the early M-car tree is expanded.
1984–1988generation lifecycle
1body branches
2engine/drive families
2range designations
E28factory code
BMW M · longitudinal layout · rear-wheel drivearchitecture
Sedan: dimensions and packaging
Dimensions can change with body, market and model year, so this page keeps them tied to the exact factory branch.
Length4,620 mm
Width1,700 mm
Height1,400 mm
Wheelbase2,625 mm
Luggage460 L
Fuel tank70 L
Seats5
Doors4-door sedan
| Body | Code | Production | Doors / seats | Length | Luggage |
|---|---|---|---|---|---|
| Sedan | E28 | 1984–1988 | 4-door sedan / 5 | 4,620 mm | 460 L |
Engines and powertrains
The generation could span very different engines and drivetrains. The table keeps output, gearbox, market and production period together.
Factory modification matrix
Documented sedan applications; output and availability remain market- and model-year-specific.
| Model | Years | Engine | Output | Transmission | Drive | Market | Source |
|---|---|---|---|---|---|---|---|
| M5 | 1984–1988 | M88/3 3.5 L inline-six | 286 PS | 5MT | RWD | Europe | The BMW M5 E28 |
| M5 North America | 1987–1988 | S38B35 3.5 L inline-six | 256 hp | 5MT | RWD | North America | The BMW M5 E28 |
Factory designations
M5 · M5 North America
High-performance powertrain
Engine, cooling, exhaust, software and transmission form a distinct M or ALPINA specification rather than an option package on the base model.
Diesel derivatives
Where diesels were offered, output, injection generation and emissions hardware are recorded market by market.
How power reaches the road
Gearboxes, driven wheels and final-drive hardware changed with engine, market and production date.
Transmissions
Gearbox type and unit code follow engine, market and production date. Gear count alone does not identify the transmission.
Driven wheels
Catalog architecture: BMW M · longitudinal layout · rear-wheel drive. All-wheel-drive availability and hardware remain derivative-specific.
Final drive
Ratio, differential type and electronic control belong to the exact derivative and can differ on performance models.
What changed underneath
Suspension, brakes, safety systems and electronics evolved across the range, even when cars shared the same basic architecture.
Body-branch dimensions
- E28: 4,620 mm × 1,700 mm × 1,400 mm
Body & suspension
- Mounting points and geometry follow the body branch
- Springs and dampers follow axle load and chassis package
- Wheels and permitted loads follow the factory label
Brakes & steering
- Brake size follows engine and equipment
- Assistance type and steering ratio can change
- ABS/DSC generation follows model year
Passive safety
- Airbag count varies by market and year
- SRS parts are VIN-specific
- Structural repairs require factory procedures
Electronics
- Vehicle-bus generations changed during production
- Control-unit software levels must remain compatible
- Retrofits are recorded separately from factory equipment
How the generation evolved
The important launches, additions and updates did not always happen at the same time for every body or market.
Production begins
Early hand-built European production established the first M5.
Press introduction
BMW publicly positioned the car as a new high-performance sedan class.
Regional expansion
North American and South African programmes added market-specific cars.
E28 M5 ends
Production closed before the more industrialised E34 successor.
The versions that stood apart
Performance models, option packages and regional editions may look related, but their engineering and production identity can be very different.
Sedan
E28M5 E28 is a distinct E28 body branch. The conventional four-door passenger-car body, balancing rear-seat access, luggage space and the generation’s core chassis layout. Engines/drive: M88/3, S38B35.
Inside the car
Cabin technology and standard equipment changed by country and year; a build sheet remains the best guide to one individual car.
Cabin & comfort
- Trim and seats follow option codes
- Climate systems vary by market
- Audio and navigation changed by model year
Lighting & assistance
- Lamp technology and modules follow production date
- Driver assistance cannot be inferred from buttons alone
- Regional rules affect lighting and warnings
What to check today
A practical starting point for inspecting and maintaining a car from this generation — not a diagnosis of an individual example.
Identify first
- Match VIN on body and documents
- Obtain the factory option list
- Confirm market and production date
Inspect the structure
- Check repairs and corrosion
- Assess suspension, brakes and tyres
- Compare fitted parts with factory specification
Mechanical history
- Read faults with compatible diagnostics
- Verify engine and transmission maintenance
- Separate invoices from unsupported verbal history
| Item | Interval / trigger | Catalog note |
|---|---|---|
| Engine oil & filter | CBS/factory schedule; time and mileage for historic cars | Oil approval follows the exact engine and market. |
| Brake fluid | Time-based factory schedule | ABS/DSC-compatible bleeding procedure is required after hydraulic work. |
| Coolant | Factory schedule and condition | Fluid specification and bleeding method are generation-specific. |
| Transmission & final drives | Unit type and operating conditions | Use the exact approved fluid; no one interval fits every derivative. |
How to identify the exact car
The badge and registration year tell only part of the story; production date, body code, engine and factory options complete it.
- Factory body codes
- E28 — Sedan
- Range designations
- M5, M5 North America
- Powertrain families
- M88/3, S38B35
- VIN
- Identifies model, plant and production branch and keys the parts catalog and factory equipment record.
- Production date
- More useful than first-registration year when choosing parts and locating technical revisions.
- Type code
- Refines engine, body, market and transmission combination.
- Option codes
- Confirm factory equipment; later retrofits are recorded separately.
- Unit number
- Supports engine or gearbox originality checks and component applicability.
Where the information comes from
The story is mapped through English Wikipedia and its bibliography, then important dates and technical claims are checked against BMW material.
- 01BMW M5Wikipedia contributors
Secondary E28 engine, market and production overview.
- 02The BMW M5 generationsBMW M
BMW M generation history covering body concepts, powertrains and principal derivatives from E28 through G90.
- 03The BMW M5 E28 from 1985BMW M
BMW M history and core European technical record.
Notes and limitations
- Research revision dated 2026-08-10: English Wikipedia was used as a subject and bibliography map; key claims were checked against the listed primary BMW Group material.
- M88/3 and catalyst-equipped S38B35 cars require separate market rows.
- State what is included whenever citing an E28 M5 production total.
- Tree years describe the worldwide generation lifecycle; individual market dates may be narrower.
- Exact dimensions, power, weight and emissions belong at body, engine, market and model-year level.
- Known-issue guidance is editorial context and never replaces inspection of the individual vehicle.
3 primary references · market differences documentedPhotography: Charles from Port Chester, New York, CC BY 2.0 · Wikimedia Commons. Rights checked 2026-08-06; wikimedia commons 1,800 px derivative downloaded; local 640 px and 1,280 px avif versions created without cropping.Updated 6 August 2026