The Renault 21 2.1 TD, producing 88 horsepower, was a diesel-powered variant of the B48 generation Renault 21, manufactured between 1989 and 1993. Positioned as a fuel-efficient and practical option within the 21 lineup, it catered to drivers prioritizing economy over outright performance. The Renault 21, launched in 1986, was intended as a replacement for the Renault 18, offering a more modern and spacious package. The B48 series represented a significant update, and the 2.1 TD model found a niche particularly in European markets where diesel engines were favored for their lower running costs and suitability for long-distance driving.
Technical Specifications
| Brand | Renault |
| Model | 21 |
| Generation | 21 (B48) |
| Type (Engine) | 2.1 TD (88 Hp) |
| Start of production | 1989 |
| End of production | 1993 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 8.3 l/100 km (28.3 US mpg, 34 UK mpg, 12 km/l) |
| Fuel consumption (extra urban) | 5 l/100 km (47 US mpg, 56.5 UK mpg, 20 km/l) |
| Fuel consumption (combined) | 6.7 l/100 km (35.1 US mpg, 42.2 UK mpg, 14.9 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 11.8 sec |
| Acceleration 0 – 62 mph | 11.8 sec |
| Acceleration 0 – 60 mph | 11.2 sec |
| Maximum speed | 177 km/h (109.98 mph) |
| Weight-to-power ratio | 12.8 kg/Hp |
| Weight-to-torque ratio | 6.1 kg/Nm |
| Power | 88 Hp @ 4250 rpm |
| Power per litre | 42.6 Hp/l |
| Torque | 184 Nm @ 2000 rpm (135.71 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | J8S |
| Engine displacement | 2068 cm3 (126.2 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 86 mm (3.39 in.) |
| Piston Stroke | 89 mm (3.5 in.) |
| Compression ratio | 21:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Precombustion chamber injection |
| Engine aspiration | Turbocharger |
| Valvetrain | OHC |
| Engine oil capacity | 6.1 l (6.45 US qt | 5.37 UK qt) |
| Coolant capacity | 7.2 l (7.61 US qt | 6.34 UK qt) |
| Kerb Weight | 1130 kg (2491.22 lbs.) |
| Max. weight | 1620 kg (3571.49 lbs.) |
| Max load | 490 kg (1080.27 lbs.) |
| Trunk (boot) space – minimum | 490 l (17.3 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Length | 4530 mm (178.35 in.) |
| Width | 1730 mm (68.11 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2660 mm (104.72 in.) |
| Front track | 1430 mm (56.3 in.) |
| Rear track | 1400 mm (55.12 in.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 5 |
| Gearbox type | Manual transmission |
| Front suspension | Spring Strut |
| Rear suspension | Torsion |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic |
| Tires size | 185/70 R13 |
| Wheel rims size | 13 |
Powertrain & Engine Architecture
The Renault 21 2.1 TD was powered by the J8S engine, a 2.1-liter inline-four cylinder diesel engine. This engine utilized precombustion chamber injection, a common diesel technology of the era. This system involved injecting fuel into a precombustion chamber connected to the main cylinder, promoting more complete combustion and reducing noise. The engine was turbocharged, which significantly boosted power output compared to naturally aspirated diesel engines. The turbocharger provided 88 horsepower at 4250 rpm and 184 Nm (135.71 lb-ft) of torque at 2000 rpm. The engine featured an overhead camshaft (OHC) valvetrain with two valves per cylinder. The 2.1 TD was exclusively offered with a five-speed manual transmission, designed to efficiently manage the engine’s torque curve and provide reasonable acceleration.
Driving Characteristics
The 2.1 TD variant of the Renault 21 offered a distinctly different driving experience compared to the gasoline-powered models. While lacking the brisk acceleration of the higher-horsepower petrol engines, the diesel provided ample torque, making it well-suited for relaxed cruising and carrying loads. The five-speed manual transmission allowed drivers to keep the engine within its optimal torque band, providing good responsiveness in most driving situations. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 11.8 seconds, and the top speed was around 177 km/h (109.98 mph). The turbocharger did introduce a degree of turbo lag, but once spooled up, it provided a noticeable increase in power. The overall driving experience was characterized by its fuel efficiency and comfortable ride, rather than sporty handling.
Equipment & Trim Levels
The Renault 21 2.1 TD typically came with a moderate level of equipment, reflecting its position as a practical and affordable option. Standard features generally included power steering, central locking, and a basic stereo system. Interior upholstery was typically cloth, and the dashboard featured a functional, if somewhat dated, design. Optional extras could include electric windows, a sunroof, and upgraded audio systems. The trim level often dictated the availability of these options, with higher trims offering more features as standard. The focus was on providing a comfortable and well-equipped vehicle without excessive luxury.
Chassis & Braking
The Renault 21 2.1 TD utilized a relatively simple chassis design. The front suspension consisted of MacPherson strut springs, while the rear suspension employed a torsion beam setup. This configuration provided a comfortable ride, although it wasn’t particularly sporty. The braking system featured ventilated discs on the front wheels and drum brakes on the rear. An Anti-lock Braking System (ABS) was often included as standard equipment, enhancing safety by preventing wheel lockup during hard braking. The steering was rack and pinion, providing reasonably precise control. The tires were typically 185/70 R13, offering a good balance of grip and ride comfort.
Market Reception & Comparison
The Renault 21 2.1 TD was generally well-received in markets where diesel engines were popular. Critics praised its fuel efficiency and practicality, making it a popular choice for fleet operators and long-distance commuters. Compared to the gasoline-powered Renault 21 variants, the 2.1 TD offered significantly better fuel economy, but at the expense of performance. It was often compared to other diesel-powered sedans of the era, such as the Peugeot 405 and Citroën BX. The Renault 21 2.1 TD offered a competitive combination of fuel economy, practicality, and affordability.
Legacy
The Renault 21 2.1 TD, while not a particularly glamorous or high-performance vehicle, proved to be a reliable and durable workhorse. The J8S engine, when properly maintained, could accumulate high mileage. Today, the Renault 21 2.1 TD is becoming increasingly rare, and well-maintained examples are sought after by enthusiasts and collectors. Its simple mechanical design makes it relatively easy to maintain and repair, and its fuel efficiency remains appealing even by modern standards. The 2.1 TD represents a significant chapter in Renault’s history, showcasing the company’s commitment to providing practical and affordable transportation.
