The BMW 735i (E38) Steptronic, produced from 1996 to 1998, represented a compelling mid-range offering within the second generation of BMW’s flagship 7 Series sedan. Positioned between the entry-level 728i and the high-performance 740i/750i models, the 735i aimed to deliver a balance of luxury, performance, and refinement. It was a key model for BMW in the North American and European markets, appealing to buyers seeking a sophisticated full-size sedan without the outright cost or sporting focus of the top-tier trims. The E38 generation, known for its robust build quality and advanced technology for its time, solidified BMW’s reputation for engineering excellence.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (E38) |
| Type (Engine) | 735i (235 Hp) Steptronic |
| Start of production | 1996 |
| End of production | 1998 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 18.5 l/100 km (12.7 US mpg) |
| Fuel consumption (extra urban) | 9.2 l/100 km (25.6 US mpg) |
| Fuel consumption (combined) | 12.6 l/100 km (18.7 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.4 sec |
| Acceleration 0 – 62 mph | 8.4 sec |
| Acceleration 0 – 60 mph | 8 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Weight-to-power ratio | 7.6 kg/Hp |
| Weight-to-torque ratio | 5.6 kg/Nm |
| Power | 235 Hp @ 5700 rpm |
| Torque | 320 Nm @ 3300 rpm (236.02 lb.-ft. @ 3300 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M62B35 |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 78.9 mm (3.11 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant capacity | 12.5 l (13.21 US qt | 11 UK qt) |
| Kerb Weight | 1790 kg (3946.27 lbs.) |
| Max. weight | 2325 kg (5125.75 lbs.) |
| Max load | 535 kg (1179.47 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| Length | 4984 mm (196.22 in.) |
| Width | 1862 mm (73.31 in.) |
| Height | 1435 mm (56.5 in.) |
| Wheelbase | 2930 mm (115.35 in.) |
| Front track | 1552 mm (61.1 in.) |
| Rear (Back) track | 1568 mm (61.73 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle | 11.6 m (38.06 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission Steptronic |
| Front suspension | Wishbone |
| Rear suspension | Inclined Lever |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 235/60 R16 |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The heart of the 735i Steptronic was the M62B35 engine, a 3.5-liter naturally aspirated V8. This engine, a significant departure from the inline-six engines previously favored by BMW, was designed for smooth power delivery and refinement. It featured a cast aluminum block and cylinder heads, dual overhead camshafts (DOHC) with four valves per cylinder, and a Bosch Motronic engine management system controlling multi-port fuel injection. The M62 engine was known for its robust construction and relatively simple design, contributing to its long-term reliability. The “Steptronic” transmission was BMW’s marketing name for its 5-speed automatic gearbox, offering both fully automatic operation and a manual shift mode for greater driver control. This transmission was designed to complement the V8’s torque curve, providing smooth and responsive gear changes.
Driving Characteristics
The 735i Steptronic offered a distinctly different driving experience compared to its manual transmission counterparts or the higher-output 740i. While the automatic transmission sacrificed some of the immediacy of the manual, it provided a more relaxed and comfortable driving experience, particularly in city traffic. The 235 horsepower and 236 lb-ft of torque were sufficient for brisk acceleration, with a 0-60 mph time of around 8 seconds. However, it wasn’t as overtly sporty as the 740i. The Steptronic transmission’s gear ratios were tuned for fuel efficiency and smooth cruising, rather than outright performance. The car felt composed and stable at highway speeds, offering a comfortable ride thanks to its sophisticated suspension.
Equipment & Trim Levels
The 735i Steptronic came standard with a generous array of features, befitting its luxury sedan status. These included leather upholstery, power-adjustable front seats with memory function, automatic climate control, a premium sound system, and a sunroof. Optional extras included a navigation system, heated front and rear seats, upgraded leather trim, and a rear entertainment system. The interior design was characterized by its understated elegance and high-quality materials. The dashboard layout was clean and functional, with intuitive controls.
Chassis & Braking
The E38 7 Series featured a robust chassis with independent suspension at all four wheels. The front suspension utilized a double wishbone design, while the rear employed an inclined lever setup. This configuration provided a comfortable ride and good handling characteristics. The 735i typically came equipped with ventilated disc brakes at the front and solid disc brakes at the rear. Anti-lock braking system (ABS) was standard, enhancing safety and stability during hard braking. The steering was a hydraulic power-assisted rack and pinion system, providing precise and responsive steering feel.
Market Reception & Comparison
The 735i Steptronic was generally well-received by automotive critics. It was praised for its smooth engine, comfortable ride, and luxurious interior. However, some reviewers noted that the automatic transmission could feel slightly sluggish compared to the manual option, and that the car lacked the outright performance of the 740i. Fuel economy was reasonable for a V8-powered luxury sedan, averaging around 18.7 US mpg in combined driving. Compared to the 728i, the 735i offered a significant performance upgrade, while remaining more affordable than the 740i. The 735i appealed to buyers who prioritized comfort and refinement over outright sporting performance.
Legacy
The M62B35 engine, found in the 735i, has proven to be a remarkably durable and reliable powerplant. With proper maintenance, these engines can easily exceed 200,000 miles. The E38 7 Series, as a whole, is now considered a classic BMW, appreciated by enthusiasts for its build quality, timeless design, and driving experience. The 735i Steptronic, while not the most sought-after variant, remains a viable option for those seeking a comfortable and reliable luxury sedan. On the used car market, well-maintained examples command a reasonable price, reflecting their enduring appeal and reputation for longevity.
