The BMW 735iL (E38) was a long-wheelbase variant of the 7 Series produced between 1996 and 1998. Positioned as a mid-range offering within the E38 generation, it aimed to provide a balance of performance, luxury, and space for discerning buyers, particularly in markets like North America where larger vehicles were preferred. The “iL” designation signified the extended wheelbase, adding approximately 5.5 inches to the standard 735i, primarily benefiting rear passenger legroom. This model represented BMW’s continued commitment to offering a technologically advanced and driver-focused luxury sedan.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series Long (E38) |
| Type (Engine) | 735iL (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 (economy) – urban | 18.5 l/100 km (12.7 US mpg, 15.3 UK mpg, 5.4 km/l) |
| Fuel consumption (economy) – extra urban | 9.2 l/100 km (25.6 US mpg, 30.7 UK mpg, 10.9 km/l) |
| Fuel consumption (economy) – combined | 12.6 l/100 km (18.7 US mpg, 22.4 UK mpg, 7.9 km/l) |
| 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 | 7.8 kg/Hp, 128.8 Hp/tonne |
| Weight-to-torque ratio | 5.7 kg/Nm, 175.3 Nm/tonne |
| Power | 235 Hp @ 5700 rpm |
| Power per litre | 67.2 Hp/l |
| 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 |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 12.5 l (13.21 US qt | 11 UK qt) |
| Kerb Weight | 1825 kg (4023.44 lbs.) |
| Max. weight | 2360 kg (5202.91 lbs.) |
| Max load | 535 kg (1179.47 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Fuel tank capacity | 95 l (25.1 US gal | 20.9 UK gal) |
| Length | 5124 mm (201.73 in.) |
| Width | 1862 mm (73.31 in.) |
| Height | 1425 mm (56.1 in.) |
| Wheelbase | 3070 mm (120.87 in.) |
| Front track | 1552 mm (61.1 in.) |
| Rear (Back) track | 1568 mm (61.73 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle (turning diameter) | 12.2 m (40.03 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, 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 735iL was the M62B35 engine, a 3.5-liter naturally aspirated V8. This engine represented a significant departure from the previous M30 inline-six engines, offering increased refinement and power. The M62 featured all-aluminum construction, dual overhead camshafts (DOHC) with four valves per cylinder, and BMW’s Double-VANOS variable valve timing system on both intake and exhaust camshafts. This system optimized engine breathing across the rev range, contributing to both performance and fuel efficiency. Fuel delivery was handled by a multi-port fuel injection system. The engine produced 235 horsepower at 5700 rpm and 236 lb-ft of torque at 3300 rpm. Paired with the M62B35 was the 5HP30 Steptronic automatic transmission, a five-speed unit known for its smooth shifts and adaptability. The Steptronic system allowed for both fully automatic operation and driver-selectable manual shifting.
Driving Characteristics
The 735iL, with its automatic transmission, offered a distinctly different driving experience compared to the six-cylinder 730i or the higher-performance 740i. While not as overtly sporty as its siblings, the 735iL provided ample power for comfortable and confident cruising. The automatic transmission, while smooth, did result in a slight reduction in acceleration compared to the manual-equipped 735i. The gear ratios were tuned for relaxed highway driving, with a focus on minimizing engine noise and maximizing fuel economy. The extended wheelbase contributed to a more comfortable ride, absorbing bumps and imperfections in the road with greater ease. However, it also slightly diminished the car’s agility in tight corners.
Equipment & Trim Levels
The 735iL came standard with a comprehensive list of luxury features, befitting its position in the BMW lineup. Standard equipment included leather upholstery, power-adjustable front seats with memory function, automatic climate control, a premium sound system, and a sunroof. The “L” designation meant rear passengers enjoyed significantly more legroom, along with available options like rear seat entertainment systems and individual climate control. Optional extras included upgraded leather, wood trim, navigation system, and active suspension. The interior design was characterized by a clean, elegant aesthetic, with a focus on high-quality materials and craftsmanship.
Chassis & Braking
The E38 7 Series featured a robust chassis with independent suspension all around. The front suspension utilized a double wishbone design, while the rear employed an inclined lever setup. This configuration provided a good balance of ride comfort and handling precision. The 735iL was 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 control during emergency braking situations. The steering was a rack-and-pinion system with hydraulic power assistance, providing precise and responsive steering feel.
Market Reception & Comparison
The 735iL was generally well-received by automotive critics, who praised its comfortable ride, spacious interior, and refined powertrain. However, some reviewers noted that the automatic transmission dulled the driving experience compared to the manual version. Compared to the 730i, the 735iL offered a noticeable performance upgrade, while remaining more affordable than the flagship 740i. Fuel economy was reasonable for a V8-powered luxury sedan, but not exceptional. Reliability was generally good, although the complex electronics of the E38 generation could occasionally present challenges.
Legacy
The E38 735iL remains a sought-after classic among BMW enthusiasts. The M62B35 engine is known for its durability and relatively straightforward maintenance. While the car’s age means that maintenance costs can be higher than for newer vehicles, the 735iL offers a unique blend of luxury, performance, and timeless design. Well-maintained examples command respectable prices in the used car market, and the car continues to be appreciated for its engineering excellence and driving experience. The E38 generation, and the 735iL in particular, set a high standard for luxury sedans and helped solidify BMW’s reputation as a leading automotive manufacturer.
