Layout    
Longitudinal front-engine, front-wheel drive

Engine    
231 cu in (3.8 L) Buick V6
252 cu in (4.1 L) Buick V6
307 cu in (5.0 L) Oldsmobile V8
350 cu in (5.7 L) Oldsmobile V8
350 cu in (5.7 L) Oldsmobile diesel V8

Transmission    
3-speed TH-325 automatic
4-speed THM325-4L automatic

Dimensions
Wheelbase    
114.0 in (2,896 mm)
Length    
206.0 in (5,232 mm)
Width    
72.8 in (1,849 mm)

Buick Riviera on Wikipedia

FWD (front-wheel drive), automatic 4-speed gearbox
gasoline (petrol) engine with displacement: 4128 cm3 / 251.9 cui, advertised power: 93 kW / 125 hp / 126 PS ( SAE net ), torque: 278 Nm / 205 lb-ft,
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1849 mm / 72.8 in, wheelbase: 2896 mm / 114 in
reference weights: base curb weight: 1765 kg / 3891 lbs
top speed: 166 km/h (103 mph) ;
accelerations: 0- 60 mph 14.3© s; 0- 100 km/h 15.2© s ; 1/4 mile drag time (402 m) 20© s 
fuel consumption and mileage: 21 mpg (U.S.), 11.2 l/100km, 25.2 mpg (imp.), 8.9 km/l EPA combined ratings; average estimated by a-c©: 13.9 l/100km / 20.4 mpg (imp.) / 17 mpg (U.S.) / 7.2 km/l

FWD (front-wheel drive), automatic 4-speed gearbox
gasoline (petrol) engine with displacement: 5033 cm3 / 307.1 cui, advertised power: 112 kW / 150 hp / 152 PS ( SAE net ), torque: 326 Nm / 240 lb-ft, 
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1849 mm / 72.8 in, wheelbase: 2896 mm / 114 in
reference weights: base curb weight: 1835 kg / 4045 lbs
top speed: 177 km/h (110 mph) ;
accelerations: 0- 60 mph 13.3© s; 0- 100 km/h 14.1© s ; 1/4 mile drag time (402 m) 19.5© s
fuel consumption and mileage: 19 mpg (U.S.), 12.4 l/100km, 22.8 mpg (imp.), 8.1 km/l EPA combined ratings; average estimated by a-c©: 16 l/100km / 17.6 mpg (imp.) / 14.7 mpg (U.S.) / 6.2 km/l

FWD (front-wheel drive), automatic 4-speed gearbox
gasoline (petrol) engine with displacement: 3791 cm3 / 231.4 cui, advertised power: 149 kW / 200 hp / 203 PS ( SAE net ), torque: 407 Nm / 300 lb-ft, 
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1796 mm / 70.7 in, wheelbase: 2896 mm / 114 in
reference weights: shipping weight 1678 kg / 3700 lbs base curb weight: 1728 kg / 3809 lbs
top speed: 189 km/h (117 mph) ;
accelerations: 0- 60 mph 9© s; 0- 100 km/h 9.5© s ; 1/4 mile drag time (402 m) 16.9© s
fuel consumption and mileage: 19 mpg (U.S.), 12.4 l/100km, 22.8 mpg (imp.), 8.1 km/l EPA combined ratings; average estimated by a-c©: 13.3 l/100km / 21.2 mpg (imp.) / 17.6 mpg (U.S.) / 7.5 km/l

FWD (front-wheel drive), automatic 4-speed gearbox
gasoline (petrol) engine with displacement: 5033 cm3 / 307.1 cui, advertised power: 104.5 kW / 140 hp / 142 PS ( SAE net ), torque: 346 Nm / 255 lb-ft, 
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1796 mm / 70.7 in, wheelbase: 2896 mm / 114 in
reference weights: shipping weight 1757 kg / 3873 lbs base curb weight: 1807 kg / 3984 lbs
top speed: 175 km/h (109 mph) ;
accelerations: 0- 60 mph 12.9© s; 0- 100 km/h 13.8© s ; 1/4 mile drag time (402 m) 19.3© s
fuel consumption and mileage: 19 mpg (U.S.), 12.4 l/100km, 22.8 mpg (imp.), 8.1 km/l EPA combined ratings; average estimated by a-c©: 16.8 l/100km / 16.8 mpg (imp.) / 14 mpg (U.S.) / 5.9 km/l

FWD (front-wheel drive), automatic 3-speed gearbox
gasoline (petrol) engine with displacement: 3791 cm3 / 231.4 cui, advertised power: 126.5 kW / 170 hp / 172 PS ( SAE net ), torque: 359 Nm / 265 lb-ft, 
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1847 mm / 72.7 in, wheelbase: 2896 mm / 114 in
reference weights: base curb weight: 1767 kg / 3895 lbs
top speed: 190 km/h (118 mph) ;
accelerations: 0- 60 mph 10.3© s; 0- 100 km/h 10.9© s ; 1/4 mile drag time (402 m) 17.6© s 
fuel consumption and mileage: 18 mpg (U.S.), 13.1 l/100km, 21.6 mpg (imp.), 7.7 km/l EPA combined ratings; average estimated by a-c©: 16.8 l/100km / 16.9 mpg (imp.) / 14 mpg (U.S.) / 6 km/l

FWD (front-wheel drive), automatic 3-speed gearbox
gasoline (petrol) engine with displacement: 5737 cm3 / 350.1 cui, advertised power: 119.5 kW / 160 hp / 163 PS ( SAE net ), torque: 366 Nm / 270 lb-ft, 
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1847 mm / 72.7 in, wheelbase: 2896 mm / 114 in
reference weights: shipping weight 1705 kg / 3759 lbs base curb weight: 1760 kg / 3880 lbs
top speed: 188 km/h (117 mph) ;
accelerations: 0- 60 mph 11.4© s; 0- 100 km/h 12.1© s ; 1/4 mile drag time (402 m) 18.3© s 
fuel consumption and mileage: 18 mpg (U.S.), 13.1 l/100km, 21.6 mpg (imp.), 7.7 km/l EPA combined ratings; average estimated by a-c©: 17.8 l/100km / 15.9 mpg (imp.) / 13.2 mpg (U.S.) / 5.6 km/l

FWD (front-wheel drive), automatic 4-speed gearbox
gasoline (petrol) engine with displacement: 3791 cm3 / 231.4 cui, advertised power: 134 kW / 180 hp / 182 PS ( SAE net ), torque: 373 Nm / 275 lb-ft, 
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1849 mm / 72.8 in, wheelbase: 2896 mm / 114 in
reference weights: base curb weight: 1720 kg / 3792 lbs
top speed: 193 km/h (120 mph) ;
accelerations: 0- 60 mph 9.6© s; 0- 100 km/h 10.1© s ; 1/4 mile drag time (402 m) 17.4© s 
fuel consumption and mileage: 21 mpg (U.S.), 11.2 l/100km, 25.2 mpg (imp.), 8.9 km/l EPA combined ratings; average estimated by a-c©: 14.8 l/100km / 19.1 mpg (imp.) / 15.9 mpg (U.S.) / 6.8 km/l

FWD (front-wheel drive), automatic 4-speed gearbox
diesel fuel engine with displacement: 5737 cm3 / 350.1 cui, advertised power: 78 kW / 105 hp / 106 PS ( SAE net ), torque: 271 Nm / 200 lb-ft,
characteristic dimensions: outside length: 5248 mm / 206.6 in, width: 1849 mm / 72.8 in, wheelbase: 2896 mm / 114 in
reference weights: base curb weight: 1840 kg / 4056 lbs
top speed: 161 km/h (100 mph) ;
accelerations: 0- 60 mph 18.9© s; 0- 100 km/h 20.1© s ; 1/4 mile drag time (402 m) 22.3© s 
fuel consumption and mileage: 25 mpg (U.S.), 9.4 l/100km, 30 mpg (imp.), 10.6 km/l EPA combined ratings; average estimated by a-c©: 12.3 l/100km / 23 mpg (imp.) / 19.1 mpg (U.S.) / 8.1 km/l

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