13 years after its debut, the Lagonda was still in production, a testament to its advanced design and individual character. The Series IV received a major styling upgrade that removed the pop-up headlights in favor of six front units. It was among the most expensive cars in the world which ensured that very few examples were ever assembled.
| type | Series Production Car |
| released at | 1987 Geneva Motor SHow |
| built at | England |
| engine | V8 |
| position | Front, Longitudinal |
| block material | Aluminum Alloy |
| fuel feed | Weber-Marelli Fuel Injection |
| displacement | 5340 cc / 325.87 in³ |
| power | 215.5 kw / 289 bhp @ 5000 rpm |
| specific output | 54.12 bhp per litre |
| bhp/weight | 140.02 bhp per tonne |
| torque | 435.2 nm / 321 ft lbs @ 3000 rpm |
| front tires | 255/60VR Avon CR27 |
| rear tires | 255/60VR Avon CR27 |
| front brakes | Discs |
| rear brakes | Discs |
| f suspension | Independent |
| r suspension | Independent |
| curb weight | 2064 kg / 4547 lbs |
| transmission | 3-Speed TorqueFlite Automatic |
